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Finding the Fourth Proportional to 622,915.60, 933,790.20 and 487,904.80

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Solution

The fourth proportional to 622,915.60, 933,790.20 and 487,904.80 is: 731,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,915.60 : 933,790.20 = 487,904.80 : x
  2. Step 2: Convert to fraction form
    622,915.60/933,790.20 = 487,904.80/x
  3. Step 3: Cross multiply
    622,915.60x = 933,790.20 × 487,904.80
  4. Step 4: Simplify right side
    622,915.60x = 455,600,720,772.96
  5. Step 5: Solve for x
    x = 455,600,720,772.96/622,915.60
  6. Step 6: Final answer
    x = 731,400.40

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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.