Home / 857,741.10-1,286,611.65-385,349.10

Finding the Fourth Proportional to 857,741.10, 1,286,611.65 and 385,349.10

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Solution

The fourth proportional to 857,741.10, 1,286,611.65 and 385,349.10 is: 578,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,741.10 : 1,286,611.65 = 385,349.10 : x
  2. Step 2: Convert to fraction form
    857,741.10/1,286,611.65 = 385,349.10/x
  3. Step 3: Cross multiply
    857,741.10x = 1,286,611.65 × 385,349.10
  4. Step 4: Simplify right side
    857,741.10x = 495,794,641,377.02
  5. Step 5: Solve for x
    x = 495,794,641,377.02/857,741.10
  6. Step 6: Final answer
    x = 578,023.65

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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.