Home / 1,315,252.20-1,972,878.30-866,479.80

Finding the Fourth Proportional to 1,315,252.20, 1,972,878.30 and 866,479.80

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Solution

The fourth proportional to 1,315,252.20, 1,972,878.30 and 866,479.80 is: 1,299,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,252.20 : 1,972,878.30 = 866,479.80 : x
  2. Step 2: Convert to fraction form
    1,315,252.20/1,972,878.30 = 866,479.80/x
  3. Step 3: Cross multiply
    1,315,252.20x = 1,972,878.30 × 866,479.80
  4. Step 4: Simplify right side
    1,315,252.20x = 1,709,459,194,808.34
  5. Step 5: Solve for x
    x = 1,709,459,194,808.34/1,315,252.20
  6. Step 6: Final answer
    x = 1,299,719.70

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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.