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Finding the Fourth Proportional to 679,533.92, 937,700.99 and 400,086.69

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Solution

The fourth proportional to 679,533.92, 937,700.99 and 400,086.69 is: 552,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,533.92 : 937,700.99 = 400,086.69 : x
  2. Step 2: Convert to fraction form
    679,533.92/937,700.99 = 400,086.69/x
  3. Step 3: Cross multiply
    679,533.92x = 937,700.99 × 400,086.69
  4. Step 4: Simplify right side
    679,533.92x = 375,161,680,610.32
  5. Step 5: Solve for x
    x = 375,161,680,610.32/679,533.92
  6. Step 6: Final answer
    x = 552,086.76

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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.