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Finding the Fourth Proportional to 653,947.20, 980,920.80 and 602,771.40

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Solution

The fourth proportional to 653,947.20, 980,920.80 and 602,771.40 is: 904,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,947.20 : 980,920.80 = 602,771.40 : x
  2. Step 2: Convert to fraction form
    653,947.20/980,920.80 = 602,771.40/x
  3. Step 3: Cross multiply
    653,947.20x = 980,920.80 × 602,771.40
  4. Step 4: Simplify right side
    653,947.20x = 591,271,003,905.12
  5. Step 5: Solve for x
    x = 591,271,003,905.12/653,947.20
  6. Step 6: Final answer
    x = 904,157.10

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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.