Home / 812,123,359.84-1,120,731,657.25-440,845,642.72

Finding the Fourth Proportional to 812,123,359.84, 1,120,731,657.25 and 440,845,642.72

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Solution

The fourth proportional to 812,123,359.84, 1,120,731,657.25 and 440,845,642.72 is: 608,367,758.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,123,359.84 : 1,120,731,657.25 = 440,845,642.72 : x
  2. Step 2: Convert to fraction form
    812,123,359.84/1,120,731,657.25 = 440,845,642.72/x
  3. Step 3: Cross multiply
    812,123,359.84x = 1,120,731,657.25 × 440,845,642.72
  4. Step 4: Simplify right side
    812,123,359.84x = 494,069,667,751,423,296
  5. Step 5: Solve for x
    x = 494,069,667,751,423,296/812,123,359.84
  6. Step 6: Final answer
    x = 608,367,758.13

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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.