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Finding the Fourth Proportional to 583,705.18, 805,478.42 and 338,670.96

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Solution

The fourth proportional to 583,705.18, 805,478.42 and 338,670.96 is: 467,345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,705.18 : 805,478.42 = 338,670.96 : x
  2. Step 2: Convert to fraction form
    583,705.18/805,478.42 = 338,670.96/x
  3. Step 3: Cross multiply
    583,705.18x = 805,478.42 × 338,670.96
  4. Step 4: Simplify right side
    583,705.18x = 272,792,149,760.68
  5. Step 5: Solve for x
    x = 272,792,149,760.68/583,705.18
  6. Step 6: Final answer
    x = 467,345.78

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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.