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Finding the Fourth Proportional to 646,560.84, 969,841.20 and 247,242

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Solution

The fourth proportional to 646,560.84, 969,841.20 and 247,242 is: 370,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,560.84 : 969,841.20 = 247,242 : x
  2. Step 2: Convert to fraction form
    646,560.84/969,841.20 = 247,242/x
  3. Step 3: Cross multiply
    646,560.84x = 969,841.20 × 247,242
  4. Step 4: Simplify right side
    646,560.84x = 239,785,477,970.40
  5. Step 5: Solve for x
    x = 239,785,477,970.40/646,560.84
  6. Step 6: Final answer
    x = 370,862.98

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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.