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Finding the Fourth Proportional to 671,630.60, 1,007,445.90 and 519,415.40

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Solution

The fourth proportional to 671,630.60, 1,007,445.90 and 519,415.40 is: 779,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,630.60 : 1,007,445.90 = 519,415.40 : x
  2. Step 2: Convert to fraction form
    671,630.60/1,007,445.90 = 519,415.40/x
  3. Step 3: Cross multiply
    671,630.60x = 1,007,445.90 × 519,415.40
  4. Step 4: Simplify right side
    671,630.60x = 523,282,915,126.86
  5. Step 5: Solve for x
    x = 523,282,915,126.86/671,630.60
  6. Step 6: Final answer
    x = 779,123.10

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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.