Home / 420,006,948.89-579,609,646.20-231,835,278.28

Finding the Fourth Proportional to 420,006,948.89, 579,609,646.20 and 231,835,278.28

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Solution

The fourth proportional to 420,006,948.89, 579,609,646.20 and 231,835,278.28 is: 319,932,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,006,948.89 : 579,609,646.20 = 231,835,278.28 : x
  2. Step 2: Convert to fraction form
    420,006,948.89/579,609,646.20 = 231,835,278.28/x
  3. Step 3: Cross multiply
    420,006,948.89x = 579,609,646.20 × 231,835,278.28
  4. Step 4: Simplify right side
    420,006,948.89x = 134,373,963,620,549,360
  5. Step 5: Solve for x
    x = 134,373,963,620,549,360/420,006,948.89
  6. Step 6: Final answer
    x = 319,932,715.34

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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.