Home / 861,903.42-1,189,402.32-469,427.46

Finding the Fourth Proportional to 861,903.42, 1,189,402.32 and 469,427.46

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Solution

The fourth proportional to 861,903.42, 1,189,402.32 and 469,427.46 is: 647,796.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,903.42 : 1,189,402.32 = 469,427.46 : x
  2. Step 2: Convert to fraction form
    861,903.42/1,189,402.32 = 469,427.46/x
  3. Step 3: Cross multiply
    861,903.42x = 1,189,402.32 × 469,427.46
  4. Step 4: Simplify right side
    861,903.42x = 558,338,109,995.71
  5. Step 5: Solve for x
    x = 558,338,109,995.71/861,903.42
  6. Step 6: Final answer
    x = 647,796.61

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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.