Home / 858,627.10-1,287,940.65-433,474.30

Finding the Fourth Proportional to 858,627.10, 1,287,940.65 and 433,474.30

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Solution

The fourth proportional to 858,627.10, 1,287,940.65 and 433,474.30 is: 650,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,627.10 : 1,287,940.65 = 433,474.30 : x
  2. Step 2: Convert to fraction form
    858,627.10/1,287,940.65 = 433,474.30/x
  3. Step 3: Cross multiply
    858,627.10x = 1,287,940.65 × 433,474.30
  4. Step 4: Simplify right side
    858,627.10x = 558,289,171,700.30
  5. Step 5: Solve for x
    x = 558,289,171,700.30/858,627.10
  6. Step 6: Final answer
    x = 650,211.45

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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.