Home / 801,986,572.20-1,202,811,896.70-393,335,999.40

Finding the Fourth Proportional to 801,986,572.20, 1,202,811,896.70 and 393,335,999.40

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Solution

The fourth proportional to 801,986,572.20, 1,202,811,896.70 and 393,335,999.40 is: 589,921,621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,986,572.20 : 1,202,811,896.70 = 393,335,999.40 : x
  2. Step 2: Convert to fraction form
    801,986,572.20/1,202,811,896.70 = 393,335,999.40/x
  3. Step 3: Cross multiply
    801,986,572.20x = 1,202,811,896.70 × 393,335,999.40
  4. Step 4: Simplify right side
    801,986,572.20x = 473,109,219,478,704,064
  5. Step 5: Solve for x
    x = 473,109,219,478,704,064/801,986,572.20
  6. Step 6: Final answer
    x = 589,921,621.98

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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.