Home / 861,242.72-1,188,506.40-479,262.92

Finding the Fourth Proportional to 861,242.72, 1,188,506.40 and 479,262.92

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Solution

The fourth proportional to 861,242.72, 1,188,506.40 and 479,262.92 is: 661,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,242.72 : 1,188,506.40 = 479,262.92 : x
  2. Step 2: Convert to fraction form
    861,242.72/1,188,506.40 = 479,262.92/x
  3. Step 3: Cross multiply
    861,242.72x = 1,188,506.40 × 479,262.92
  4. Step 4: Simplify right side
    861,242.72x = 569,607,047,702.69
  5. Step 5: Solve for x
    x = 569,607,047,702.69/861,242.72
  6. Step 6: Final answer
    x = 661,378.07

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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.