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Finding the Fourth Proportional to 999,700.20, 1,499,550.30 and 645,114.60

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Solution

The fourth proportional to 999,700.20, 1,499,550.30 and 645,114.60 is: 967,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,700.20 : 1,499,550.30 = 645,114.60 : x
  2. Step 2: Convert to fraction form
    999,700.20/1,499,550.30 = 645,114.60/x
  3. Step 3: Cross multiply
    999,700.20x = 1,499,550.30 × 645,114.60
  4. Step 4: Simplify right side
    999,700.20x = 967,381,791,964.38
  5. Step 5: Solve for x
    x = 967,381,791,964.38/999,700.20
  6. Step 6: Final answer
    x = 967,671.90

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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.