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Finding the Fourth Proportional to 648,007.80, 972,011.70 and 618,483.30

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Solution

The fourth proportional to 648,007.80, 972,011.70 and 618,483.30 is: 927,724.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,007.80 : 972,011.70 = 618,483.30 : x
  2. Step 2: Convert to fraction form
    648,007.80/972,011.70 = 618,483.30/x
  3. Step 3: Cross multiply
    648,007.80x = 972,011.70 × 618,483.30
  4. Step 4: Simplify right side
    648,007.80x = 601,173,003,854.61
  5. Step 5: Solve for x
    x = 601,173,003,854.61/648,007.80
  6. Step 6: Final answer
    x = 927,724.95

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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.