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Finding the Fourth Proportional to 691,655.13, 954,482.13 and 385,731.81

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Solution

The fourth proportional to 691,655.13, 954,482.13 and 385,731.81 is: 532,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,655.13 : 954,482.13 = 385,731.81 : x
  2. Step 2: Convert to fraction form
    691,655.13/954,482.13 = 385,731.81/x
  3. Step 3: Cross multiply
    691,655.13x = 954,482.13 × 385,731.81
  4. Step 4: Simplify right side
    691,655.13x = 368,174,119,617.56
  5. Step 5: Solve for x
    x = 368,174,119,617.56/691,655.13
  6. Step 6: Final answer
    x = 532,308.81

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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.