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Finding the Fourth Proportional to 532,235,959.20, 798,353,938.80 and 388,908,727.20

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Solution

The fourth proportional to 532,235,959.20, 798,353,938.80 and 388,908,727.20 is: 583,363,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,235,959.20 : 798,353,938.80 = 388,908,727.20 : x
  2. Step 2: Convert to fraction form
    532,235,959.20/798,353,938.80 = 388,908,727.20/x
  3. Step 3: Cross multiply
    532,235,959.20x = 798,353,938.80 × 388,908,727.20
  4. Step 4: Simplify right side
    532,235,959.20x = 310,486,814,193,814,656
  5. Step 5: Solve for x
    x = 310,486,814,193,814,656/532,235,959.20
  6. Step 6: Final answer
    x = 583,363,090.80

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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.