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Finding the Fourth Proportional to 715,346.70, 987,264.27 and 429,024.30

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Solution

The fourth proportional to 715,346.70, 987,264.27 and 429,024.30 is: 592,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,346.70 : 987,264.27 = 429,024.30 : x
  2. Step 2: Convert to fraction form
    715,346.70/987,264.27 = 429,024.30/x
  3. Step 3: Cross multiply
    715,346.70x = 987,264.27 × 429,024.30
  4. Step 4: Simplify right side
    715,346.70x = 423,560,362,351.76
  5. Step 5: Solve for x
    x = 423,560,362,351.76/715,346.70
  6. Step 6: Final answer
    x = 592,105.01

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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.