Home / 692,642.80-1,038,964.20-219,327.40

Finding the Fourth Proportional to 692,642.80, 1,038,964.20 and 219,327.40

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Solution

The fourth proportional to 692,642.80, 1,038,964.20 and 219,327.40 is: 328,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,642.80 : 1,038,964.20 = 219,327.40 : x
  2. Step 2: Convert to fraction form
    692,642.80/1,038,964.20 = 219,327.40/x
  3. Step 3: Cross multiply
    692,642.80x = 1,038,964.20 × 219,327.40
  4. Step 4: Simplify right side
    692,642.80x = 227,873,316,679.08
  5. Step 5: Solve for x
    x = 227,873,316,679.08/692,642.80
  6. Step 6: Final answer
    x = 328,991.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.