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Finding the Fourth Proportional to 611,645.64, 844,041.76 and 339,730.80

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Solution

The fourth proportional to 611,645.64, 844,041.76 and 339,730.80 is: 468,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,645.64 : 844,041.76 = 339,730.80 : x
  2. Step 2: Convert to fraction form
    611,645.64/844,041.76 = 339,730.80/x
  3. Step 3: Cross multiply
    611,645.64x = 844,041.76 × 339,730.80
  4. Step 4: Simplify right side
    611,645.64x = 286,746,982,358.21
  5. Step 5: Solve for x
    x = 286,746,982,358.21/611,645.64
  6. Step 6: Final answer
    x = 468,812.27

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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.