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Finding the Fourth Proportional to 804,908.40, 1,209,695.40 and 702,265.20

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Solution

The fourth proportional to 804,908.40, 1,209,695.40 and 702,265.20 is: 1,055,433.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,908.40 : 1,209,695.40 = 702,265.20 : x
  2. Step 2: Convert to fraction form
    804,908.40/1,209,695.40 = 702,265.20/x
  3. Step 3: Cross multiply
    804,908.40x = 1,209,695.40 × 702,265.20
  4. Step 4: Simplify right side
    804,908.40x = 849,526,982,020.08
  5. Step 5: Solve for x
    x = 849,526,982,020.08/804,908.40
  6. Step 6: Final answer
    x = 1,055,433.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.