Home / 691,254.86-1,036,507.08-311,731.54

Finding the Fourth Proportional to 691,254.86, 1,036,507.08 and 311,731.54

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Solution

The fourth proportional to 691,254.86, 1,036,507.08 and 311,731.54 is: 467,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,254.86 : 1,036,507.08 = 311,731.54 : x
  2. Step 2: Convert to fraction form
    691,254.86/1,036,507.08 = 311,731.54/x
  3. Step 3: Cross multiply
    691,254.86x = 1,036,507.08 × 311,731.54
  4. Step 4: Simplify right side
    691,254.86x = 323,111,948,269.30
  5. Step 5: Solve for x
    x = 323,111,948,269.30/691,254.86
  6. Step 6: Final answer
    x = 467,428.10

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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.