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Finding the Fourth Proportional to 606,921.70, 910,382.55 and 291,216.10

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Solution

The fourth proportional to 606,921.70, 910,382.55 and 291,216.10 is: 436,824.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,921.70 : 910,382.55 = 291,216.10 : x
  2. Step 2: Convert to fraction form
    606,921.70/910,382.55 = 291,216.10/x
  3. Step 3: Cross multiply
    606,921.70x = 910,382.55 × 291,216.10
  4. Step 4: Simplify right side
    606,921.70x = 265,118,055,719.06
  5. Step 5: Solve for x
    x = 265,118,055,719.06/606,921.70
  6. Step 6: Final answer
    x = 436,824.15

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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.