Home / 876,999.30-1,315,110.15-403,440.90

Finding the Fourth Proportional to 876,999.30, 1,315,110.15 and 403,440.90

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Solution

The fourth proportional to 876,999.30, 1,315,110.15 and 403,440.90 is: 604,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,999.30 : 1,315,110.15 = 403,440.90 : x
  2. Step 2: Convert to fraction form
    876,999.30/1,315,110.15 = 403,440.90/x
  3. Step 3: Cross multiply
    876,999.30x = 1,315,110.15 × 403,440.90
  4. Step 4: Simplify right side
    876,999.30x = 530,569,222,515.14
  5. Step 5: Solve for x
    x = 530,569,222,515.14/876,999.30
  6. Step 6: Final answer
    x = 604,982.49

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1.5x scale

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.