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Finding the Fourth Proportional to 524,940.40, 724,417.56 and 286,476.40

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Solution

The fourth proportional to 524,940.40, 724,417.56 and 286,476.40 is: 395,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,940.40 : 724,417.56 = 286,476.40 : x
  2. Step 2: Convert to fraction form
    524,940.40/724,417.56 = 286,476.40/x
  3. Step 3: Cross multiply
    524,940.40x = 724,417.56 × 286,476.40
  4. Step 4: Simplify right side
    524,940.40x = 207,528,534,685.58
  5. Step 5: Solve for x
    x = 207,528,534,685.58/524,940.40
  6. Step 6: Final answer
    x = 395,337.33

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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.