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Finding the Fourth Proportional to 615,746.50, 849,721.38 and 343,818.70

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Solution

The fourth proportional to 615,746.50, 849,721.38 and 343,818.70 is: 474,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,746.50 : 849,721.38 = 343,818.70 : x
  2. Step 2: Convert to fraction form
    615,746.50/849,721.38 = 343,818.70/x
  3. Step 3: Cross multiply
    615,746.50x = 849,721.38 × 343,818.70
  4. Step 4: Simplify right side
    615,746.50x = 292,150,100,233.81
  5. Step 5: Solve for x
    x = 292,150,100,233.81/615,746.50
  6. Step 6: Final answer
    x = 474,464.90

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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.