Home / 719,566,331.72-993,001,870.50-389,541,471.08

Finding the Fourth Proportional to 719,566,331.72, 993,001,870.50 and 389,541,471.08

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Solution

The fourth proportional to 719,566,331.72, 993,001,870.50 and 389,541,471.08 is: 537,567,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,566,331.72 : 993,001,870.50 = 389,541,471.08 : x
  2. Step 2: Convert to fraction form
    719,566,331.72/993,001,870.50 = 389,541,471.08/x
  3. Step 3: Cross multiply
    719,566,331.72x = 993,001,870.50 × 389,541,471.08
  4. Step 4: Simplify right side
    719,566,331.72x = 386,815,409,419,761,664
  5. Step 5: Solve for x
    x = 386,815,409,419,761,664/719,566,331.72
  6. Step 6: Final answer
    x = 537,567,410.21

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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.