Home / 815,416.80-1,223,125.20-514,266.90

Finding the Fourth Proportional to 815,416.80, 1,223,125.20 and 514,266.90

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Solution

The fourth proportional to 815,416.80, 1,223,125.20 and 514,266.90 is: 771,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,416.80 : 1,223,125.20 = 514,266.90 : x
  2. Step 2: Convert to fraction form
    815,416.80/1,223,125.20 = 514,266.90/x
  3. Step 3: Cross multiply
    815,416.80x = 1,223,125.20 × 514,266.90
  4. Step 4: Simplify right side
    815,416.80x = 629,012,804,915.88
  5. Step 5: Solve for x
    x = 629,012,804,915.88/815,416.80
  6. Step 6: Final answer
    x = 771,400.35

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Double scale
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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.