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Finding the Fourth Proportional to 485,326,793.88, 728,020,837.17 and 205,155,465.17

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Solution

The fourth proportional to 485,326,793.88, 728,020,837.17 and 205,155,465.17 is: 307,746,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,326,793.88 : 728,020,837.17 = 205,155,465.17 : x
  2. Step 2: Convert to fraction form
    485,326,793.88/728,020,837.17 = 205,155,465.17/x
  3. Step 3: Cross multiply
    485,326,793.88x = 728,020,837.17 × 205,155,465.17
  4. Step 4: Simplify right side
    485,326,793.88x = 149,357,453,499,424,064
  5. Step 5: Solve for x
    x = 149,357,453,499,424,064/485,326,793.88
  6. Step 6: Final answer
    x = 307,746,152.45

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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.