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Finding the Fourth Proportional to 767,701.52, 1,059,430 and 428,191.76

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Solution

The fourth proportional to 767,701.52, 1,059,430 and 428,191.76 is: 590,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,701.52 : 1,059,430 = 428,191.76 : x
  2. Step 2: Convert to fraction form
    767,701.52/1,059,430 = 428,191.76/x
  3. Step 3: Cross multiply
    767,701.52x = 1,059,430 × 428,191.76
  4. Step 4: Simplify right side
    767,701.52x = 453,639,196,296.80
  5. Step 5: Solve for x
    x = 453,639,196,296.80/767,701.52
  6. Step 6: Final answer
    x = 590,905.69

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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.