Home / 853,405.10-1,280,107.65-433,501.10

Finding the Fourth Proportional to 853,405.10, 1,280,107.65 and 433,501.10

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Solution

The fourth proportional to 853,405.10, 1,280,107.65 and 433,501.10 is: 650,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,405.10 : 1,280,107.65 = 433,501.10 : x
  2. Step 2: Convert to fraction form
    853,405.10/1,280,107.65 = 433,501.10/x
  3. Step 3: Cross multiply
    853,405.10x = 1,280,107.65 × 433,501.10
  4. Step 4: Simplify right side
    853,405.10x = 554,928,074,393.42
  5. Step 5: Solve for x
    x = 554,928,074,393.42/853,405.10
  6. Step 6: Final answer
    x = 650,251.65

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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.