Home / 853,490.76-1,177,851.12-490,914.24

Finding the Fourth Proportional to 853,490.76, 1,177,851.12 and 490,914.24

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Solution

The fourth proportional to 853,490.76, 1,177,851.12 and 490,914.24 is: 677,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,490.76 : 1,177,851.12 = 490,914.24 : x
  2. Step 2: Convert to fraction form
    853,490.76/1,177,851.12 = 490,914.24/x
  3. Step 3: Cross multiply
    853,490.76x = 1,177,851.12 × 490,914.24
  4. Step 4: Simplify right side
    853,490.76x = 578,223,887,407.95
  5. Step 5: Solve for x
    x = 578,223,887,407.95/853,490.76
  6. Step 6: Final answer
    x = 677,481.13

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Double scale
Find fourth proportional to 853,491.76, 1,177,852.50 and 490,915.24
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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.