Home / 689,739.18-1,034,652.50-216,443.22

Finding the Fourth Proportional to 689,739.18, 1,034,652.50 and 216,443.22

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Solution

The fourth proportional to 689,739.18, 1,034,652.50 and 216,443.22 is: 324,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,739.18 : 1,034,652.50 = 216,443.22 : x
  2. Step 2: Convert to fraction form
    689,739.18/1,034,652.50 = 216,443.22/x
  3. Step 3: Cross multiply
    689,739.18x = 1,034,652.50 × 216,443.22
  4. Step 4: Simplify right side
    689,739.18x = 223,943,518,681.05
  5. Step 5: Solve for x
    x = 223,943,518,681.05/689,739.18
  6. Step 6: Final answer
    x = 324,678.55

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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.