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Finding the Fourth Proportional to 458,532.08, 688,517.16 and 388,374.32

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Solution

The fourth proportional to 458,532.08, 688,517.16 and 388,374.32 is: 583,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,532.08 : 688,517.16 = 388,374.32 : x
  2. Step 2: Convert to fraction form
    458,532.08/688,517.16 = 388,374.32/x
  3. Step 3: Cross multiply
    458,532.08x = 688,517.16 × 388,374.32
  4. Step 4: Simplify right side
    458,532.08x = 267,402,383,823.33
  5. Step 5: Solve for x
    x = 267,402,383,823.33/458,532.08
  6. Step 6: Final answer
    x = 583,170.50

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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.