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Finding the Fourth Proportional to 480,351.75, 662,886.06 and 276,398.61

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Solution

The fourth proportional to 480,351.75, 662,886.06 and 276,398.61 is: 381,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,351.75 : 662,886.06 = 276,398.61 : x
  2. Step 2: Convert to fraction form
    480,351.75/662,886.06 = 276,398.61/x
  3. Step 3: Cross multiply
    480,351.75x = 662,886.06 × 276,398.61
  4. Step 4: Simplify right side
    480,351.75x = 183,220,785,572.38
  5. Step 5: Solve for x
    x = 183,220,785,572.38/480,351.75
  6. Step 6: Final answer
    x = 381,430.45

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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.