Home / 1,315,956.90-1,971,310.95-685,226.10

Finding the Fourth Proportional to 1,315,956.90, 1,971,310.95 and 685,226.10

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Solution

The fourth proportional to 1,315,956.90, 1,971,310.95 and 685,226.10 is: 1,026,472.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,956.90 : 1,971,310.95 = 685,226.10 : x
  2. Step 2: Convert to fraction form
    1,315,956.90/1,971,310.95 = 685,226.10/x
  3. Step 3: Cross multiply
    1,315,956.90x = 1,971,310.95 × 685,226.10
  4. Step 4: Simplify right side
    1,315,956.90x = 1,350,793,714,155.80
  5. Step 5: Solve for x
    x = 1,350,793,714,155.80/1,315,956.90
  6. Step 6: Final answer
    x = 1,026,472.61

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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.