Home / 1,264,619,894.21-1,745,358,089.33-728,668,951.19

Finding the Fourth Proportional to 1,264,619,894.21, 1,745,358,089.33 and 728,668,951.19

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Solution

The fourth proportional to 1,264,619,894.21, 1,745,358,089.33 and 728,668,951.19 is: 1,005,668,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,619,894.21 : 1,745,358,089.33 = 728,668,951.19 : x
  2. Step 2: Convert to fraction form
    1,264,619,894.21/1,745,358,089.33 = 728,668,951.19/x
  3. Step 3: Cross multiply
    1,264,619,894.21x = 1,745,358,089.33 × 728,668,951.19
  4. Step 4: Simplify right side
    1,264,619,894.21x = 1,271,788,248,399,430,144
  5. Step 5: Solve for x
    x = 1,271,788,248,399,430,144/1,264,619,894.21
  6. Step 6: Final answer
    x = 1,005,668,386.38

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Double scale
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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.