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Finding the Fourth Proportional to 431,569,411.60, 647,354,117.40 and 247,147,574.80

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Solution

The fourth proportional to 431,569,411.60, 647,354,117.40 and 247,147,574.80 is: 370,721,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,411.60 : 647,354,117.40 = 247,147,574.80 : x
  2. Step 2: Convert to fraction form
    431,569,411.60/647,354,117.40 = 247,147,574.80/x
  3. Step 3: Cross multiply
    431,569,411.60x = 647,354,117.40 × 247,147,574.80
  4. Step 4: Simplify right side
    431,569,411.60x = 159,992,000,152,204,480
  5. Step 5: Solve for x
    x = 159,992,000,152,204,480/431,569,411.60
  6. Step 6: Final answer
    x = 370,721,362.20

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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.