Home / 859,386,128.16-1,288,161,414.72-490,125,974.43

Finding the Fourth Proportional to 859,386,128.16, 1,288,161,414.72 and 490,125,974.43

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Solution

The fourth proportional to 859,386,128.16, 1,288,161,414.72 and 490,125,974.43 is: 734,665,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,386,128.16 : 1,288,161,414.72 = 490,125,974.43 : x
  2. Step 2: Convert to fraction form
    859,386,128.16/1,288,161,414.72 = 490,125,974.43/x
  3. Step 3: Cross multiply
    859,386,128.16x = 1,288,161,414.72 × 490,125,974.43
  4. Step 4: Simplify right side
    859,386,128.16x = 631,361,368,612,767,360
  5. Step 5: Solve for x
    x = 631,361,368,612,767,360/859,386,128.16
  6. Step 6: Final answer
    x = 734,665,533.83

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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.