Home / 917,936.65-1,376,862.90-318,944.69

Finding the Fourth Proportional to 917,936.65, 1,376,862.90 and 318,944.69

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Solution

The fourth proportional to 917,936.65, 1,376,862.90 and 318,944.69 is: 478,402.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,936.65 : 1,376,862.90 = 318,944.69 : x
  2. Step 2: Convert to fraction form
    917,936.65/1,376,862.90 = 318,944.69/x
  3. Step 3: Cross multiply
    917,936.65x = 1,376,862.90 × 318,944.69
  4. Step 4: Simplify right side
    917,936.65x = 439,143,103,928.69
  5. Step 5: Solve for x
    x = 439,143,103,928.69/917,936.65
  6. Step 6: Final answer
    x = 478,402.41

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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.