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Finding the Fourth Proportional to 666,730.32, 920,081.34 and 360,800.16

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Solution

The fourth proportional to 666,730.32, 920,081.34 and 360,800.16 is: 497,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,730.32 : 920,081.34 = 360,800.16 : x
  2. Step 2: Convert to fraction form
    666,730.32/920,081.34 = 360,800.16/x
  3. Step 3: Cross multiply
    666,730.32x = 920,081.34 × 360,800.16
  4. Step 4: Simplify right side
    666,730.32x = 331,965,494,685.01
  5. Step 5: Solve for x
    x = 331,965,494,685.01/666,730.32
  6. Step 6: Final answer
    x = 497,900.70

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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.