Home / 385,901,470.49-532,542,869.83-209,690,003.48

Finding the Fourth Proportional to 385,901,470.49, 532,542,869.83 and 209,690,003.48

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Solution

The fourth proportional to 385,901,470.49, 532,542,869.83 and 209,690,003.48 is: 289,371,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,901,470.49 : 532,542,869.83 = 209,690,003.48 : x
  2. Step 2: Convert to fraction form
    385,901,470.49/532,542,869.83 = 209,690,003.48/x
  3. Step 3: Cross multiply
    385,901,470.49x = 532,542,869.83 × 209,690,003.48
  4. Step 4: Simplify right side
    385,901,470.49x = 111,668,916,225,499,184
  5. Step 5: Solve for x
    x = 111,668,916,225,499,184/385,901,470.49
  6. Step 6: Final answer
    x = 289,371,574.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.