Home / 858,011.10-1,287,016.65-659,334.30

Finding the Fourth Proportional to 858,011.10, 1,287,016.65 and 659,334.30

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Solution

The fourth proportional to 858,011.10, 1,287,016.65 and 659,334.30 is: 989,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,011.10 : 1,287,016.65 = 659,334.30 : x
  2. Step 2: Convert to fraction form
    858,011.10/1,287,016.65 = 659,334.30/x
  3. Step 3: Cross multiply
    858,011.10x = 1,287,016.65 × 659,334.30
  4. Step 4: Simplify right side
    858,011.10x = 848,574,222,016.10
  5. Step 5: Solve for x
    x = 848,574,222,016.10/858,011.10
  6. Step 6: Final answer
    x = 989,001.45

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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.