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Finding the Fourth Proportional to 853,807.76, 1,178,279.10 and 466,644.67

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Solution

The fourth proportional to 853,807.76, 1,178,279.10 and 466,644.67 is: 643,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,807.76 : 1,178,279.10 = 466,644.67 : x
  2. Step 2: Convert to fraction form
    853,807.76/1,178,279.10 = 466,644.67/x
  3. Step 3: Cross multiply
    853,807.76x = 1,178,279.10 × 466,644.67
  4. Step 4: Simplify right side
    853,807.76x = 549,837,653,562.78
  5. Step 5: Solve for x
    x = 549,837,653,562.78/853,807.76
  6. Step 6: Final answer
    x = 643,982.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.