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Finding the Fourth Proportional to 870,572.22, 1,201,449.18 and 483,407.64

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Solution

The fourth proportional to 870,572.22, 1,201,449.18 and 483,407.64 is: 667,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,572.22 : 1,201,449.18 = 483,407.64 : x
  2. Step 2: Convert to fraction form
    870,572.22/1,201,449.18 = 483,407.64/x
  3. Step 3: Cross multiply
    870,572.22x = 1,201,449.18 × 483,407.64
  4. Step 4: Simplify right side
    870,572.22x = 580,789,712,683.74
  5. Step 5: Solve for x
    x = 580,789,712,683.74/870,572.22
  6. Step 6: Final answer
    x = 667,135.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.