Home / 431,071,401.18-647,015,897.76-266,812,288.32

Finding the Fourth Proportional to 431,071,401.18, 647,015,897.76 and 266,812,288.32

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Solution

The fourth proportional to 431,071,401.18, 647,015,897.76 and 266,812,288.32 is: 400,471,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,071,401.18 : 647,015,897.76 = 266,812,288.32 : x
  2. Step 2: Convert to fraction form
    431,071,401.18/647,015,897.76 = 266,812,288.32/x
  3. Step 3: Cross multiply
    431,071,401.18x = 647,015,897.76 × 266,812,288.32
  4. Step 4: Simplify right side
    431,071,401.18x = 172,631,792,260,764,768
  5. Step 5: Solve for x
    x = 172,631,792,260,764,768/431,071,401.18
  6. Step 6: Final answer
    x = 400,471,457.37

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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.