Home / 689,877.42-1,034,816.40-310,354.86

Finding the Fourth Proportional to 689,877.42, 1,034,816.40 and 310,354.86

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Solution

The fourth proportional to 689,877.42, 1,034,816.40 and 310,354.86 is: 465,532.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,877.42 : 1,034,816.40 = 310,354.86 : x
  2. Step 2: Convert to fraction form
    689,877.42/1,034,816.40 = 310,354.86/x
  3. Step 3: Cross multiply
    689,877.42x = 1,034,816.40 × 310,354.86
  4. Step 4: Simplify right side
    689,877.42x = 321,160,298,947.70
  5. Step 5: Solve for x
    x = 321,160,298,947.70/689,877.42
  6. Step 6: Final answer
    x = 465,532.41

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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.