Home / 1,386,031.66-2,079,121.90-439,476.18

Finding the Fourth Proportional to 1,386,031.66, 2,079,121.90 and 439,476.18

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Solution

The fourth proportional to 1,386,031.66, 2,079,121.90 and 439,476.18 is: 659,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,031.66 : 2,079,121.90 = 439,476.18 : x
  2. Step 2: Convert to fraction form
    1,386,031.66/2,079,121.90 = 439,476.18/x
  3. Step 3: Cross multiply
    1,386,031.66x = 2,079,121.90 × 439,476.18
  4. Step 4: Simplify right side
    1,386,031.66x = 913,724,550,366.34
  5. Step 5: Solve for x
    x = 913,724,550,366.34/1,386,031.66
  6. Step 6: Final answer
    x = 659,237.86

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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.