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Finding the Fourth Proportional to 440,456.86, 607,915.68 and 287,229.03

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Solution

The fourth proportional to 440,456.86, 607,915.68 and 287,229.03 is: 396,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,456.86 : 607,915.68 = 287,229.03 : x
  2. Step 2: Convert to fraction form
    440,456.86/607,915.68 = 287,229.03/x
  3. Step 3: Cross multiply
    440,456.86x = 607,915.68 × 287,229.03
  4. Step 4: Simplify right side
    440,456.86x = 174,611,031,088.19
  5. Step 5: Solve for x
    x = 174,611,031,088.19/440,456.86
  6. Step 6: Final answer
    x = 396,431.63

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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.