Home / 915,721.38-1,263,695.58-507,885.57

Finding the Fourth Proportional to 915,721.38, 1,263,695.58 and 507,885.57

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Solution

The fourth proportional to 915,721.38, 1,263,695.58 and 507,885.57 is: 700,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,721.38 : 1,263,695.58 = 507,885.57 : x
  2. Step 2: Convert to fraction form
    915,721.38/1,263,695.58 = 507,885.57/x
  3. Step 3: Cross multiply
    915,721.38x = 1,263,695.58 × 507,885.57
  4. Step 4: Simplify right side
    915,721.38x = 641,812,749,954.78
  5. Step 5: Solve for x
    x = 641,812,749,954.78/915,721.38
  6. Step 6: Final answer
    x = 700,882.13

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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.