Home / 638,140.15-880,622.09-347,754.31

Finding the Fourth Proportional to 638,140.15, 880,622.09 and 347,754.31

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Solution

The fourth proportional to 638,140.15, 880,622.09 and 347,754.31 is: 479,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,140.15 : 880,622.09 = 347,754.31 : x
  2. Step 2: Convert to fraction form
    638,140.15/880,622.09 = 347,754.31/x
  3. Step 3: Cross multiply
    638,140.15x = 880,622.09 × 347,754.31
  4. Step 4: Simplify right side
    638,140.15x = 306,240,124,642.46
  5. Step 5: Solve for x
    x = 306,240,124,642.46/638,140.15
  6. Step 6: Final answer
    x = 479,894.78

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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.