Home / 913,123.80-1,369,685.70-869,578.20

Finding the Fourth Proportional to 913,123.80, 1,369,685.70 and 869,578.20

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Solution

The fourth proportional to 913,123.80, 1,369,685.70 and 869,578.20 is: 1,304,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,123.80 : 1,369,685.70 = 869,578.20 : x
  2. Step 2: Convert to fraction form
    913,123.80/1,369,685.70 = 869,578.20/x
  3. Step 3: Cross multiply
    913,123.80x = 1,369,685.70 × 869,578.20
  4. Step 4: Simplify right side
    913,123.80x = 1,191,048,825,571.74
  5. Step 5: Solve for x
    x = 1,191,048,825,571.74/913,123.80
  6. Step 6: Final answer
    x = 1,304,367.30

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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.