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Finding the Fourth Proportional to 671,620.60, 1,007,430.90 and 459,044.20

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Solution

The fourth proportional to 671,620.60, 1,007,430.90 and 459,044.20 is: 688,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,620.60 : 1,007,430.90 = 459,044.20 : x
  2. Step 2: Convert to fraction form
    671,620.60/1,007,430.90 = 459,044.20/x
  3. Step 3: Cross multiply
    671,620.60x = 1,007,430.90 × 459,044.20
  4. Step 4: Simplify right side
    671,620.60x = 462,455,311,545.78
  5. Step 5: Solve for x
    x = 462,455,311,545.78/671,620.60
  6. Step 6: Final answer
    x = 688,566.30

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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.