Home / 542,862,028.80-814,293,043.20-389,807,020.80

Finding the Fourth Proportional to 542,862,028.80, 814,293,043.20 and 389,807,020.80

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Solution

The fourth proportional to 542,862,028.80, 814,293,043.20 and 389,807,020.80 is: 584,710,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,862,028.80 : 814,293,043.20 = 389,807,020.80 : x
  2. Step 2: Convert to fraction form
    542,862,028.80/814,293,043.20 = 389,807,020.80/x
  3. Step 3: Cross multiply
    542,862,028.80x = 814,293,043.20 × 389,807,020.80
  4. Step 4: Simplify right side
    542,862,028.80x = 317,417,145,227,957,696
  5. Step 5: Solve for x
    x = 317,417,145,227,957,696/542,862,028.80
  6. Step 6: Final answer
    x = 584,710,531.20

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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.