Home / 1,215,338,145.90-1,677,168,343.19-658,421,192.96

Finding the Fourth Proportional to 1,215,338,145.90, 1,677,168,343.19 and 658,421,192.96

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Solution

The fourth proportional to 1,215,338,145.90, 1,677,168,343.19 and 658,421,192.96 is: 908,622,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,338,145.90 : 1,677,168,343.19 = 658,421,192.96 : x
  2. Step 2: Convert to fraction form
    1,215,338,145.90/1,677,168,343.19 = 658,421,192.96/x
  3. Step 3: Cross multiply
    1,215,338,145.90x = 1,677,168,343.19 × 658,421,192.96
  4. Step 4: Simplify right side
    1,215,338,145.90x = 1,104,283,181,306,228,608
  5. Step 5: Solve for x
    x = 1,104,283,181,306,228,608/1,215,338,145.90
  6. Step 6: Final answer
    x = 908,622,168.27

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Double scale
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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.