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Finding the Fourth Proportional to 542,862,079.80, 814,293,119.70 and 389,807,071.80

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Solution

The fourth proportional to 542,862,079.80, 814,293,119.70 and 389,807,071.80 is: 584,710,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,862,079.80 : 814,293,119.70 = 389,807,071.80 : x
  2. Step 2: Convert to fraction form
    542,862,079.80/814,293,119.70 = 389,807,071.80/x
  3. Step 3: Cross multiply
    542,862,079.80x = 814,293,119.70 × 389,807,071.80
  4. Step 4: Simplify right side
    542,862,079.80x = 317,417,216,577,143,936
  5. Step 5: Solve for x
    x = 317,417,216,577,143,936/542,862,079.80
  6. Step 6: Final answer
    x = 584,710,607.70

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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.