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Finding the Fourth Proportional to 567,291.70, 782,862.54 and 312,642.89

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Solution

The fourth proportional to 567,291.70, 782,862.54 and 312,642.89 is: 431,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,291.70 : 782,862.54 = 312,642.89 : x
  2. Step 2: Convert to fraction form
    567,291.70/782,862.54 = 312,642.89/x
  3. Step 3: Cross multiply
    567,291.70x = 782,862.54 × 312,642.89
  4. Step 4: Simplify right side
    567,291.70x = 244,756,407,465.28
  5. Step 5: Solve for x
    x = 244,756,407,465.28/567,291.70
  6. Step 6: Final answer
    x = 431,447.18

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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.