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Finding the Fourth Proportional to 521,245.44, 719,386.52 and 291,890.08

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Solution

The fourth proportional to 521,245.44, 719,386.52 and 291,890.08 is: 402,846.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,245.44 : 719,386.52 = 291,890.08 : x
  2. Step 2: Convert to fraction form
    521,245.44/719,386.52 = 291,890.08/x
  3. Step 3: Cross multiply
    521,245.44x = 719,386.52 × 291,890.08
  4. Step 4: Simplify right side
    521,245.44x = 209,981,788,873.72
  5. Step 5: Solve for x
    x = 209,981,788,873.72/521,245.44
  6. Step 6: Final answer
    x = 402,846.28

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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.