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Finding the Fourth Proportional to 873,681.13, 1,205,480.50 and 491,568.49

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Solution

The fourth proportional to 873,681.13, 1,205,480.50 and 491,568.49 is: 678,252.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,681.13 : 1,205,480.50 = 491,568.49 : x
  2. Step 2: Convert to fraction form
    873,681.13/1,205,480.50 = 491,568.49/x
  3. Step 3: Cross multiply
    873,681.13x = 1,205,480.50 × 491,568.49
  4. Step 4: Simplify right side
    873,681.13x = 592,576,229,109.45
  5. Step 5: Solve for x
    x = 592,576,229,109.45/873,681.13
  6. Step 6: Final answer
    x = 678,252.29

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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.