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Finding the Fourth Proportional to 488,794.40, 732,608.40 and 438,639.20

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Solution

The fourth proportional to 488,794.40, 732,608.40 and 438,639.20 is: 657,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,794.40 : 732,608.40 = 438,639.20 : x
  2. Step 2: Convert to fraction form
    488,794.40/732,608.40 = 438,639.20/x
  3. Step 3: Cross multiply
    488,794.40x = 732,608.40 × 438,639.20
  4. Step 4: Simplify right side
    488,794.40x = 321,350,762,489.28
  5. Step 5: Solve for x
    x = 321,350,762,489.28/488,794.40
  6. Step 6: Final answer
    x = 657,435.44

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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.