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Finding the Fourth Proportional to 448,486.56, 671,356.08 and 290,400.48

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Solution

The fourth proportional to 448,486.56, 671,356.08 and 290,400.48 is: 434,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,486.56 : 671,356.08 = 290,400.48 : x
  2. Step 2: Convert to fraction form
    448,486.56/671,356.08 = 290,400.48/x
  3. Step 3: Cross multiply
    448,486.56x = 671,356.08 × 290,400.48
  4. Step 4: Simplify right side
    448,486.56x = 194,962,127,882.92
  5. Step 5: Solve for x
    x = 194,962,127,882.92/448,486.56
  6. Step 6: Final answer
    x = 434,711.19

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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.