Home / 1,423,619,763.13-1,964,615,554.27-820,778,460.56

Finding the Fourth Proportional to 1,423,619,763.13, 1,964,615,554.27 and 820,778,460.56

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Solution

The fourth proportional to 1,423,619,763.13, 1,964,615,554.27 and 820,778,460.56 is: 1,132,685,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,619,763.13 : 1,964,615,554.27 = 820,778,460.56 : x
  2. Step 2: Convert to fraction form
    1,423,619,763.13/1,964,615,554.27 = 820,778,460.56/x
  3. Step 3: Cross multiply
    1,423,619,763.13x = 1,964,615,554.27 × 820,778,460.56
  4. Step 4: Simplify right side
    1,423,619,763.13x = 1,612,514,130,230,834,176
  5. Step 5: Solve for x
    x = 1,612,514,130,230,834,176/1,423,619,763.13
  6. Step 6: Final answer
    x = 1,132,685,968.54

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Double scale
Find fourth proportional to 1,423,619,764.13, 1,964,615,555.65 and 820,778,461.56
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.