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Finding the Fourth Proportional to 473,979.80, 654,099.90 and 283,009.88

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Solution

The fourth proportional to 473,979.80, 654,099.90 and 283,009.88 is: 390,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,979.80 : 654,099.90 = 283,009.88 : x
  2. Step 2: Convert to fraction form
    473,979.80/654,099.90 = 283,009.88/x
  3. Step 3: Cross multiply
    473,979.80x = 654,099.90 × 283,009.88
  4. Step 4: Simplify right side
    473,979.80x = 185,116,734,207.01
  5. Step 5: Solve for x
    x = 185,116,734,207.01/473,979.80
  6. Step 6: Final answer
    x = 390,558.28

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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.