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Finding the Fourth Proportional to 488,840.40, 732,677.40 and 438,685.20

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Solution

The fourth proportional to 488,840.40, 732,677.40 and 438,685.20 is: 657,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,840.40 : 732,677.40 = 438,685.20 : x
  2. Step 2: Convert to fraction form
    488,840.40/732,677.40 = 438,685.20/x
  3. Step 3: Cross multiply
    488,840.40x = 732,677.40 × 438,685.20
  4. Step 4: Simplify right side
    488,840.40x = 321,414,731,754.48
  5. Step 5: Solve for x
    x = 321,414,731,754.48/488,840.40
  6. Step 6: Final answer
    x = 657,504.44

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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.