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Finding the Fourth Proportional to 615,699.38, 849,657.09 and 343,771.90

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Solution

The fourth proportional to 615,699.38, 849,657.09 and 343,771.90 is: 474,400.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,699.38 : 849,657.09 = 343,771.90 : x
  2. Step 2: Convert to fraction form
    615,699.38/849,657.09 = 343,771.90/x
  3. Step 3: Cross multiply
    615,699.38x = 849,657.09 × 343,771.90
  4. Step 4: Simplify right side
    615,699.38x = 292,088,231,342.77
  5. Step 5: Solve for x
    x = 292,088,231,342.77/615,699.38
  6. Step 6: Final answer
    x = 474,400.73

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1.5x scale

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.