Home / 1,279,891,274.30-1,919,836,916-359,767,612.92

Finding the Fourth Proportional to 1,279,891,274.30, 1,919,836,916 and 359,767,612.92

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Solution

The fourth proportional to 1,279,891,274.30, 1,919,836,916 and 359,767,612.92 is: 539,651,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,891,274.30 : 1,919,836,916 = 359,767,612.92 : x
  2. Step 2: Convert to fraction form
    1,279,891,274.30/1,919,836,916 = 359,767,612.92/x
  3. Step 3: Cross multiply
    1,279,891,274.30x = 1,919,836,916 × 359,767,612.92
  4. Step 4: Simplify right side
    1,279,891,274.30x = 690,695,144,465,014,528
  5. Step 5: Solve for x
    x = 690,695,144,465,014,528/1,279,891,274.30
  6. Step 6: Final answer
    x = 539,651,420.66

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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.