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Finding the Fourth Proportional to 704,966.76, 972,870.57 and 418,487.94

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Solution

The fourth proportional to 704,966.76, 972,870.57 and 418,487.94 is: 577,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,966.76 : 972,870.57 = 418,487.94 : x
  2. Step 2: Convert to fraction form
    704,966.76/972,870.57 = 418,487.94/x
  3. Step 3: Cross multiply
    704,966.76x = 972,870.57 × 418,487.94
  4. Step 4: Simplify right side
    704,966.76x = 407,134,600,725.93
  5. Step 5: Solve for x
    x = 407,134,600,725.93/704,966.76
  6. Step 6: Final answer
    x = 577,523.12

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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.