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Finding the Fourth Proportional to 876,473.76, 1,209,549.12 and 514,158.72

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Solution

The fourth proportional to 876,473.76, 1,209,549.12 and 514,158.72 is: 709,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,473.76 : 1,209,549.12 = 514,158.72 : x
  2. Step 2: Convert to fraction form
    876,473.76/1,209,549.12 = 514,158.72/x
  3. Step 3: Cross multiply
    876,473.76x = 1,209,549.12 × 514,158.72
  4. Step 4: Simplify right side
    876,473.76x = 621,900,227,316.33
  5. Step 5: Solve for x
    x = 621,900,227,316.33/876,473.76
  6. Step 6: Final answer
    x = 709,548.03

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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.