Home / 719,566,330.72-993,001,869.12-389,541,470.08

Finding the Fourth Proportional to 719,566,330.72, 993,001,869.12 and 389,541,470.08

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Solution

The fourth proportional to 719,566,330.72, 993,001,869.12 and 389,541,470.08 is: 537,567,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,566,330.72 : 993,001,869.12 = 389,541,470.08 : x
  2. Step 2: Convert to fraction form
    719,566,330.72/993,001,869.12 = 389,541,470.08/x
  3. Step 3: Cross multiply
    719,566,330.72x = 993,001,869.12 × 389,541,470.08
  4. Step 4: Simplify right side
    719,566,330.72x = 386,815,407,889,192,512
  5. Step 5: Solve for x
    x = 386,815,407,889,192,512/719,566,330.72
  6. Step 6: Final answer
    x = 537,567,408.83

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1.5x scale

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.