Home / 407,986,712.40-563,023,569.76-231,784,376.45

Finding the Fourth Proportional to 407,986,712.40, 563,023,569.76 and 231,784,376.45

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Solution

The fourth proportional to 407,986,712.40, 563,023,569.76 and 231,784,376.45 is: 319,863,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,986,712.40 : 563,023,569.76 = 231,784,376.45 : x
  2. Step 2: Convert to fraction form
    407,986,712.40/563,023,569.76 = 231,784,376.45/x
  3. Step 3: Cross multiply
    407,986,712.40x = 563,023,569.76 × 231,784,376.45
  4. Step 4: Simplify right side
    407,986,712.40x = 130,500,067,045,621,552
  5. Step 5: Solve for x
    x = 130,500,067,045,621,552/407,986,712.40
  6. Step 6: Final answer
    x = 319,863,522.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.