Home / 718,744,211.04-991,867,012.80-388,719,350

Finding the Fourth Proportional to 718,744,211.04, 991,867,012.80 and 388,719,350

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Solution

The fourth proportional to 718,744,211.04, 991,867,012.80 and 388,719,350 is: 536,432,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,744,211.04 : 991,867,012.80 = 388,719,350 : x
  2. Step 2: Convert to fraction form
    718,744,211.04/991,867,012.80 = 388,719,350/x
  3. Step 3: Cross multiply
    718,744,211.04x = 991,867,012.80 × 388,719,350
  4. Step 4: Simplify right side
    718,744,211.04x = 385,557,900,502,057,664
  5. Step 5: Solve for x
    x = 385,557,900,502,057,664/718,744,211.04
  6. Step 6: Final answer
    x = 536,432,703.85

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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.