Home / 812,588.85-1,121,000.40-526,201.20

Finding the Fourth Proportional to 812,588.85, 1,121,000.40 and 526,201.20

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Solution

The fourth proportional to 812,588.85, 1,121,000.40 and 526,201.20 is: 725,916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,588.85 : 1,121,000.40 = 526,201.20 : x
  2. Step 2: Convert to fraction form
    812,588.85/1,121,000.40 = 526,201.20/x
  3. Step 3: Cross multiply
    812,588.85x = 1,121,000.40 × 526,201.20
  4. Step 4: Simplify right side
    812,588.85x = 589,871,755,680.48
  5. Step 5: Solve for x
    x = 589,871,755,680.48/812,588.85
  6. Step 6: Final answer
    x = 725,916.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.