Home / 1,315,386.20-1,973,079.30-866,613.80

Finding the Fourth Proportional to 1,315,386.20, 1,973,079.30 and 866,613.80

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Solution

The fourth proportional to 1,315,386.20, 1,973,079.30 and 866,613.80 is: 1,299,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,386.20 : 1,973,079.30 = 866,613.80 : x
  2. Step 2: Convert to fraction form
    1,315,386.20/1,973,079.30 = 866,613.80/x
  3. Step 3: Cross multiply
    1,315,386.20x = 1,973,079.30 × 866,613.80
  4. Step 4: Simplify right side
    1,315,386.20x = 1,709,897,749,874.34
  5. Step 5: Solve for x
    x = 1,709,897,749,874.34/1,315,386.20
  6. Step 6: Final answer
    x = 1,299,920.70

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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.