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Finding the Fourth Proportional to 424,699.80, 638,000.10 and 354,715.80

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Solution

The fourth proportional to 424,699.80, 638,000.10 and 354,715.80 is: 532,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,699.80 : 638,000.10 = 354,715.80 : x
  2. Step 2: Convert to fraction form
    424,699.80/638,000.10 = 354,715.80/x
  3. Step 3: Cross multiply
    424,699.80x = 638,000.10 × 354,715.80
  4. Step 4: Simplify right side
    424,699.80x = 226,308,715,871.58
  5. Step 5: Solve for x
    x = 226,308,715,871.58/424,699.80
  6. Step 6: Final answer
    x = 532,867.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.