Home / 915,026.78-1,371,191.28-509,660.66

Finding the Fourth Proportional to 915,026.78, 1,371,191.28 and 509,660.66

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Solution

The fourth proportional to 915,026.78, 1,371,191.28 and 509,660.66 is: 763,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,026.78 : 1,371,191.28 = 509,660.66 : x
  2. Step 2: Convert to fraction form
    915,026.78/1,371,191.28 = 509,660.66/x
  3. Step 3: Cross multiply
    915,026.78x = 1,371,191.28 × 509,660.66
  4. Step 4: Simplify right side
    915,026.78x = 698,842,252,751.05
  5. Step 5: Solve for x
    x = 698,842,252,751.05/915,026.78
  6. Step 6: Final answer
    x = 763,739.67

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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.