Home / 674,239.86-930,479.28-387,760.17

Finding the Fourth Proportional to 674,239.86, 930,479.28 and 387,760.17

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Solution

The fourth proportional to 674,239.86, 930,479.28 and 387,760.17 is: 535,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,239.86 : 930,479.28 = 387,760.17 : x
  2. Step 2: Convert to fraction form
    674,239.86/930,479.28 = 387,760.17/x
  3. Step 3: Cross multiply
    674,239.86x = 930,479.28 × 387,760.17
  4. Step 4: Simplify right side
    674,239.86x = 360,802,803,794.28
  5. Step 5: Solve for x
    x = 360,802,803,794.28/674,239.86
  6. Step 6: Final answer
    x = 535,125.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.