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Finding the Fourth Proportional to 525,703,510.60, 788,555,265.90 and 389,654,614.60

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Solution

The fourth proportional to 525,703,510.60, 788,555,265.90 and 389,654,614.60 is: 584,481,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,703,510.60 : 788,555,265.90 = 389,654,614.60 : x
  2. Step 2: Convert to fraction form
    525,703,510.60/788,555,265.90 = 389,654,614.60/x
  3. Step 3: Cross multiply
    525,703,510.60x = 788,555,265.90 × 389,654,614.60
  4. Step 4: Simplify right side
    525,703,510.60x = 307,264,198,225,065,024
  5. Step 5: Solve for x
    x = 307,264,198,225,065,024/525,703,510.60
  6. Step 6: Final answer
    x = 584,481,921.90

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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.