Home / 385,644,139.10-578,488,070.46-123,351,728.80

Finding the Fourth Proportional to 385,644,139.10, 578,488,070.46 and 123,351,728.80

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Solution

The fourth proportional to 385,644,139.10, 578,488,070.46 and 123,351,728.80 is: 185,034,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,644,139.10 : 578,488,070.46 = 123,351,728.80 : x
  2. Step 2: Convert to fraction form
    385,644,139.10/578,488,070.46 = 123,351,728.80/x
  3. Step 3: Cross multiply
    385,644,139.10x = 578,488,070.46 × 123,351,728.80
  4. Step 4: Simplify right side
    385,644,139.10x = 71,357,503,580,475,480
  5. Step 5: Solve for x
    x = 71,357,503,580,475,480/385,644,139.10
  6. Step 6: Final answer
    x = 185,034,585.89

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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.