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Finding the Fourth Proportional to 539,709.56, 744,864.81 and 313,355.06

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Solution

The fourth proportional to 539,709.56, 744,864.81 and 313,355.06 is: 432,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,709.56 : 744,864.81 = 313,355.06 : x
  2. Step 2: Convert to fraction form
    539,709.56/744,864.81 = 313,355.06/x
  3. Step 3: Cross multiply
    539,709.56x = 744,864.81 × 313,355.06
  4. Step 4: Simplify right side
    539,709.56x = 233,407,157,916.52
  5. Step 5: Solve for x
    x = 233,407,157,916.52/539,709.56
  6. Step 6: Final answer
    x = 432,468.08

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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.