Home / 917,378.06-1,375,521.95-348,800.78

Finding the Fourth Proportional to 917,378.06, 1,375,521.95 and 348,800.78

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Solution

The fourth proportional to 917,378.06, 1,375,521.95 and 348,800.78 is: 522,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,378.06 : 1,375,521.95 = 348,800.78 : x
  2. Step 2: Convert to fraction form
    917,378.06/1,375,521.95 = 348,800.78/x
  3. Step 3: Cross multiply
    917,378.06x = 1,375,521.95 × 348,800.78
  4. Step 4: Simplify right side
    917,378.06x = 479,783,133,377.93
  5. Step 5: Solve for x
    x = 479,783,133,377.93/917,378.06
  6. Step 6: Final answer
    x = 522,993.91

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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.