Home / 861,738.30-1,292,607.45-488,490.30

Finding the Fourth Proportional to 861,738.30, 1,292,607.45 and 488,490.30

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Solution

The fourth proportional to 861,738.30, 1,292,607.45 and 488,490.30 is: 732,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,738.30 : 1,292,607.45 = 488,490.30 : x
  2. Step 2: Convert to fraction form
    861,738.30/1,292,607.45 = 488,490.30/x
  3. Step 3: Cross multiply
    861,738.30x = 1,292,607.45 × 488,490.30
  4. Step 4: Simplify right side
    861,738.30x = 631,426,201,032.74
  5. Step 5: Solve for x
    x = 631,426,201,032.74/861,738.30
  6. Step 6: Final answer
    x = 732,735.45

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Double scale
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Similar ratio
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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.