Home / 428,545.66-642,823.98-295,390.18

Finding the Fourth Proportional to 428,545.66, 642,823.98 and 295,390.18

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Solution

The fourth proportional to 428,545.66, 642,823.98 and 295,390.18 is: 443,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,545.66 : 642,823.98 = 295,390.18 : x
  2. Step 2: Convert to fraction form
    428,545.66/642,823.98 = 295,390.18/x
  3. Step 3: Cross multiply
    428,545.66x = 642,823.98 × 295,390.18
  4. Step 4: Simplify right side
    428,545.66x = 189,883,891,160.52
  5. Step 5: Solve for x
    x = 189,883,891,160.52/428,545.66
  6. Step 6: Final answer
    x = 443,089.05

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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.