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Finding the Fourth Proportional to 717,349.32, 989,944.92 and 430,874.28

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Solution

The fourth proportional to 717,349.32, 989,944.92 and 430,874.28 is: 594,608.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,349.32 : 989,944.92 = 430,874.28 : x
  2. Step 2: Convert to fraction form
    717,349.32/989,944.92 = 430,874.28/x
  3. Step 3: Cross multiply
    717,349.32x = 989,944.92 × 430,874.28
  4. Step 4: Simplify right side
    717,349.32x = 426,541,804,644.66
  5. Step 5: Solve for x
    x = 426,541,804,644.66/717,349.32
  6. Step 6: Final answer
    x = 594,608.22

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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.