Home / 555,126.71-831,428.89-434,431.47

Finding the Fourth Proportional to 555,126.71, 831,428.89 and 434,431.47

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Solution

The fourth proportional to 555,126.71, 831,428.89 and 434,431.47 is: 650,660.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,126.71 : 831,428.89 = 434,431.47 : x
  2. Step 2: Convert to fraction form
    555,126.71/831,428.89 = 434,431.47/x
  3. Step 3: Cross multiply
    555,126.71x = 831,428.89 × 434,431.47
  4. Step 4: Simplify right side
    555,126.71x = 361,198,874,883.17
  5. Step 5: Solve for x
    x = 361,198,874,883.17/555,126.71
  6. Step 6: Final answer
    x = 650,660.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.