Home / 876,685.20-1,315,027.80-315,646.80

Finding the Fourth Proportional to 876,685.20, 1,315,027.80 and 315,646.80

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Solution

The fourth proportional to 876,685.20, 1,315,027.80 and 315,646.80 is: 473,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,685.20 : 1,315,027.80 = 315,646.80 : x
  2. Step 2: Convert to fraction form
    876,685.20/1,315,027.80 = 315,646.80/x
  3. Step 3: Cross multiply
    876,685.20x = 1,315,027.80 × 315,646.80
  4. Step 4: Simplify right side
    876,685.20x = 415,084,316,981.04
  5. Step 5: Solve for x
    x = 415,084,316,981.04/876,685.20
  6. Step 6: Final answer
    x = 473,470.20

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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.