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Finding the Fourth Proportional to 704,443.62, 972,132.20 and 402,644.10

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Solution

The fourth proportional to 704,443.62, 972,132.20 and 402,644.10 is: 555,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,443.62 : 972,132.20 = 402,644.10 : x
  2. Step 2: Convert to fraction form
    704,443.62/972,132.20 = 402,644.10/x
  3. Step 3: Cross multiply
    704,443.62x = 972,132.20 × 402,644.10
  4. Step 4: Simplify right side
    704,443.62x = 391,423,294,750.02
  5. Step 5: Solve for x
    x = 391,423,294,750.02/704,443.62
  6. Step 6: Final answer
    x = 555,648.86

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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.