Home / 876,085.23-1,209,256.11-513,587.55

Finding the Fourth Proportional to 876,085.23, 1,209,256.11 and 513,587.55

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Solution

The fourth proportional to 876,085.23, 1,209,256.11 and 513,587.55 is: 708,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,085.23 : 1,209,256.11 = 513,587.55 : x
  2. Step 2: Convert to fraction form
    876,085.23/1,209,256.11 = 513,587.55/x
  3. Step 3: Cross multiply
    876,085.23x = 1,209,256.11 × 513,587.55
  4. Step 4: Simplify right side
    876,085.23x = 621,058,882,857.43
  5. Step 5: Solve for x
    x = 621,058,882,857.43/876,085.23
  6. Step 6: Final answer
    x = 708,902.36

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Double scale
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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.