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Finding the Fourth Proportional to 688,421.88, 950,158.86 and 439,904.97

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Solution

The fourth proportional to 688,421.88, 950,158.86 and 439,904.97 is: 607,156.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,421.88 : 950,158.86 = 439,904.97 : x
  2. Step 2: Convert to fraction form
    688,421.88/950,158.86 = 439,904.97/x
  3. Step 3: Cross multiply
    688,421.88x = 950,158.86 × 439,904.97
  4. Step 4: Simplify right side
    688,421.88x = 417,979,604,803.53
  5. Step 5: Solve for x
    x = 417,979,604,803.53/688,421.88
  6. Step 6: Final answer
    x = 607,156.19

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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.