Home / 642,514.04-963,521.90-342,831.12

Finding the Fourth Proportional to 642,514.04, 963,521.90 and 342,831.12

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Solution

The fourth proportional to 642,514.04, 963,521.90 and 342,831.12 is: 514,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,514.04 : 963,521.90 = 342,831.12 : x
  2. Step 2: Convert to fraction form
    642,514.04/963,521.90 = 342,831.12/x
  3. Step 3: Cross multiply
    642,514.04x = 963,521.90 × 342,831.12
  4. Step 4: Simplify right side
    642,514.04x = 330,325,288,079.78
  5. Step 5: Solve for x
    x = 330,325,288,079.78/642,514.04
  6. Step 6: Final answer
    x = 514,113.73

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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.