Home / 1,278,006.60-1,916,280.90-479,314.20

Finding the Fourth Proportional to 1,278,006.60, 1,916,280.90 and 479,314.20

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Solution

The fourth proportional to 1,278,006.60, 1,916,280.90 and 479,314.20 is: 718,697.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,006.60 : 1,916,280.90 = 479,314.20 : x
  2. Step 2: Convert to fraction form
    1,278,006.60/1,916,280.90 = 479,314.20/x
  3. Step 3: Cross multiply
    1,278,006.60x = 1,916,280.90 × 479,314.20
  4. Step 4: Simplify right side
    1,278,006.60x = 918,500,646,558.78
  5. Step 5: Solve for x
    x = 918,500,646,558.78/1,278,006.60
  6. Step 6: Final answer
    x = 718,697.89

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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.