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Finding the Fourth Proportional to 482,784.82, 666,088.92 and 278,808.80

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Solution

The fourth proportional to 482,784.82, 666,088.92 and 278,808.80 is: 384,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,784.82 : 666,088.92 = 278,808.80 : x
  2. Step 2: Convert to fraction form
    482,784.82/666,088.92 = 278,808.80/x
  3. Step 3: Cross multiply
    482,784.82x = 666,088.92 × 278,808.80
  4. Step 4: Simplify right side
    482,784.82x = 185,711,452,478.50
  5. Step 5: Solve for x
    x = 185,711,452,478.50/482,784.82
  6. Step 6: Final answer
    x = 384,667.13

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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.