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Finding the Fourth Proportional to 666,724.32, 920,073.06 and 360,794.16

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Solution

The fourth proportional to 666,724.32, 920,073.06 and 360,794.16 is: 497,892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,724.32 : 920,073.06 = 360,794.16 : x
  2. Step 2: Convert to fraction form
    666,724.32/920,073.06 = 360,794.16/x
  3. Step 3: Cross multiply
    666,724.32x = 920,073.06 × 360,794.16
  4. Step 4: Simplify right side
    666,724.32x = 331,956,986,821.33
  5. Step 5: Solve for x
    x = 331,956,986,821.33/666,724.32
  6. Step 6: Final answer
    x = 497,892.42

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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.