Home / 812,365.76-1,121,188.56-506,491.76

Finding the Fourth Proportional to 812,365.76, 1,121,188.56 and 506,491.76

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Solution

The fourth proportional to 812,365.76, 1,121,188.56 and 506,491.76 is: 699,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,365.76 : 1,121,188.56 = 506,491.76 : x
  2. Step 2: Convert to fraction form
    812,365.76/1,121,188.56 = 506,491.76/x
  3. Step 3: Cross multiply
    812,365.76x = 1,121,188.56 × 506,491.76
  4. Step 4: Simplify right side
    812,365.76x = 567,872,767,046.27
  5. Step 5: Solve for x
    x = 567,872,767,046.27/812,365.76
  6. Step 6: Final answer
    x = 699,035.82

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1.5x scale

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.