Home / 853,890.12-1,280,789.01-433,155.06

Finding the Fourth Proportional to 853,890.12, 1,280,789.01 and 433,155.06

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Solution

The fourth proportional to 853,890.12, 1,280,789.01 and 433,155.06 is: 649,709.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,890.12 : 1,280,789.01 = 433,155.06 : x
  2. Step 2: Convert to fraction form
    853,890.12/1,280,789.01 = 433,155.06/x
  3. Step 3: Cross multiply
    853,890.12x = 1,280,789.01 × 433,155.06
  4. Step 4: Simplify right side
    853,890.12x = 554,780,240,473.89
  5. Step 5: Solve for x
    x = 554,780,240,473.89/853,890.12
  6. Step 6: Final answer
    x = 649,709.17

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Double scale
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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.