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Finding the Fourth Proportional to 666,802.80, 999,329.40 and 267,116.40

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Solution

The fourth proportional to 666,802.80, 999,329.40 and 267,116.40 is: 400,324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,802.80 : 999,329.40 = 267,116.40 : x
  2. Step 2: Convert to fraction form
    666,802.80/999,329.40 = 267,116.40/x
  3. Step 3: Cross multiply
    666,802.80x = 999,329.40 × 267,116.40
  4. Step 4: Simplify right side
    666,802.80x = 266,937,271,742.16
  5. Step 5: Solve for x
    x = 266,937,271,742.16/666,802.80
  6. Step 6: Final answer
    x = 400,324.16

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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.