Home / 431,352,679.20-647,029,018.80-358,651,550.40

Finding the Fourth Proportional to 431,352,679.20, 647,029,018.80 and 358,651,550.40

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Solution

The fourth proportional to 431,352,679.20, 647,029,018.80 and 358,651,550.40 is: 537,977,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,352,679.20 : 647,029,018.80 = 358,651,550.40 : x
  2. Step 2: Convert to fraction form
    431,352,679.20/647,029,018.80 = 358,651,550.40/x
  3. Step 3: Cross multiply
    431,352,679.20x = 647,029,018.80 × 358,651,550.40
  4. Step 4: Simplify right side
    431,352,679.20x = 232,057,960,746,410,720
  5. Step 5: Solve for x
    x = 232,057,960,746,410,720/431,352,679.20
  6. Step 6: Final answer
    x = 537,977,325.60

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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.