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Finding the Fourth Proportional to 626,805.60, 940,822.80 and 311,618.40

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Solution

The fourth proportional to 626,805.60, 940,822.80 and 311,618.40 is: 467,733.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,805.60 : 940,822.80 = 311,618.40 : x
  2. Step 2: Convert to fraction form
    626,805.60/940,822.80 = 311,618.40/x
  3. Step 3: Cross multiply
    626,805.60x = 940,822.80 × 311,618.40
  4. Step 4: Simplify right side
    626,805.60x = 293,177,695,619.52
  5. Step 5: Solve for x
    x = 293,177,695,619.52/626,805.60
  6. Step 6: Final answer
    x = 467,733.05

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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.