Home / 915,763.50-1,263,753.63-507,927.78

Finding the Fourth Proportional to 915,763.50, 1,263,753.63 and 507,927.78

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Solution

The fourth proportional to 915,763.50, 1,263,753.63 and 507,927.78 is: 700,940.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,763.50 : 1,263,753.63 = 507,927.78 : x
  2. Step 2: Convert to fraction form
    915,763.50/1,263,753.63 = 507,927.78/x
  3. Step 3: Cross multiply
    915,763.50x = 1,263,753.63 × 507,927.78
  4. Step 4: Simplify right side
    915,763.50x = 641,895,575,752.84
  5. Step 5: Solve for x
    x = 641,895,575,752.84/915,763.50
  6. Step 6: Final answer
    x = 700,940.34

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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.