Home / 899,186.32-1,240,862.64-491,279.40

Finding the Fourth Proportional to 899,186.32, 1,240,862.64 and 491,279.40

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Solution

The fourth proportional to 899,186.32, 1,240,862.64 and 491,279.40 is: 677,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,186.32 : 1,240,862.64 = 491,279.40 : x
  2. Step 2: Convert to fraction form
    899,186.32/1,240,862.64 = 491,279.40/x
  3. Step 3: Cross multiply
    899,186.32x = 1,240,862.64 × 491,279.40
  4. Step 4: Simplify right side
    899,186.32x = 609,610,253,261.62
  5. Step 5: Solve for x
    x = 609,610,253,261.62/899,186.32
  6. Step 6: Final answer
    x = 677,957.66

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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.