Home / 859,442.70-1,289,164.05-499,243.80

Finding the Fourth Proportional to 859,442.70, 1,289,164.05 and 499,243.80

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Solution

The fourth proportional to 859,442.70, 1,289,164.05 and 499,243.80 is: 748,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,442.70 : 1,289,164.05 = 499,243.80 : x
  2. Step 2: Convert to fraction form
    859,442.70/1,289,164.05 = 499,243.80/x
  3. Step 3: Cross multiply
    859,442.70x = 1,289,164.05 × 499,243.80
  4. Step 4: Simplify right side
    859,442.70x = 643,607,159,145.39
  5. Step 5: Solve for x
    x = 643,607,159,145.39/859,442.70
  6. Step 6: Final answer
    x = 748,865.70

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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.