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Finding the Fourth Proportional to 802,289.79, 1,200,722.13 and 780,700.14

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Solution

The fourth proportional to 802,289.79, 1,200,722.13 and 780,700.14 is: 1,168,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,289.79 : 1,200,722.13 = 780,700.14 : x
  2. Step 2: Convert to fraction form
    802,289.79/1,200,722.13 = 780,700.14/x
  3. Step 3: Cross multiply
    802,289.79x = 1,200,722.13 × 780,700.14
  4. Step 4: Simplify right side
    802,289.79x = 937,403,934,992.10
  5. Step 5: Solve for x
    x = 937,403,934,992.10/802,289.79
  6. Step 6: Final answer
    x = 1,168,410.65

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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.