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Finding the Fourth Proportional to 453,880.20, 680,820.30 and 424,355.70

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Solution

The fourth proportional to 453,880.20, 680,820.30 and 424,355.70 is: 636,533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,880.20 : 680,820.30 = 424,355.70 : x
  2. Step 2: Convert to fraction form
    453,880.20/680,820.30 = 424,355.70/x
  3. Step 3: Cross multiply
    453,880.20x = 680,820.30 × 424,355.70
  4. Step 4: Simplify right side
    453,880.20x = 288,909,974,980.71
  5. Step 5: Solve for x
    x = 288,909,974,980.71/453,880.20
  6. Step 6: Final answer
    x = 636,533.55

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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.