Home / 745,634.76-1,118,340.36-240,128.88

Finding the Fourth Proportional to 745,634.76, 1,118,340.36 and 240,128.88

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Solution

The fourth proportional to 745,634.76, 1,118,340.36 and 240,128.88 is: 360,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,634.76 : 1,118,340.36 = 240,128.88 : x
  2. Step 2: Convert to fraction form
    745,634.76/1,118,340.36 = 240,128.88/x
  3. Step 3: Cross multiply
    745,634.76x = 1,118,340.36 × 240,128.88
  4. Step 4: Simplify right side
    745,634.76x = 268,545,818,105.60
  5. Step 5: Solve for x
    x = 268,545,818,105.60/745,634.76
  6. Step 6: Final answer
    x = 360,157.32

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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.