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Finding the Fourth Proportional to 488,827.40, 732,657.90 and 438,672.20

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Solution

The fourth proportional to 488,827.40, 732,657.90 and 438,672.20 is: 657,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,827.40 : 732,657.90 = 438,672.20 : x
  2. Step 2: Convert to fraction form
    488,827.40/732,657.90 = 438,672.20/x
  3. Step 3: Cross multiply
    488,827.40x = 732,657.90 × 438,672.20
  4. Step 4: Simplify right side
    488,827.40x = 321,396,652,840.38
  5. Step 5: Solve for x
    x = 321,396,652,840.38/488,827.40
  6. Step 6: Final answer
    x = 657,484.94

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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.