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Finding the Fourth Proportional to 453,801.20, 680,701.80 and 424,276.70

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Solution

The fourth proportional to 453,801.20, 680,701.80 and 424,276.70 is: 636,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,801.20 : 680,701.80 = 424,276.70 : x
  2. Step 2: Convert to fraction form
    453,801.20/680,701.80 = 424,276.70/x
  3. Step 3: Cross multiply
    453,801.20x = 680,701.80 × 424,276.70
  4. Step 4: Simplify right side
    453,801.20x = 288,805,913,388.06
  5. Step 5: Solve for x
    x = 288,805,913,388.06/453,801.20
  6. Step 6: Final answer
    x = 636,415.05

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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.