Home / 1,442,278.32-1,990,123.15-830,312.84

Finding the Fourth Proportional to 1,442,278.32, 1,990,123.15 and 830,312.84

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Solution

The fourth proportional to 1,442,278.32, 1,990,123.15 and 830,312.84 is: 1,145,704.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,278.32 : 1,990,123.15 = 830,312.84 : x
  2. Step 2: Convert to fraction form
    1,442,278.32/1,990,123.15 = 830,312.84/x
  3. Step 3: Cross multiply
    1,442,278.32x = 1,990,123.15 × 830,312.84
  4. Step 4: Simplify right side
    1,442,278.32x = 1,652,424,800,474.68
  5. Step 5: Solve for x
    x = 1,652,424,800,474.68/1,442,278.32
  6. Step 6: Final answer
    x = 1,145,704.53

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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.