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Finding the Fourth Proportional to 890,172.48, 1,335,313 and 291,196.88

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Solution

The fourth proportional to 890,172.48, 1,335,313 and 291,196.88 is: 436,813.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,172.48 : 1,335,313 = 291,196.88 : x
  2. Step 2: Convert to fraction form
    890,172.48/1,335,313 = 291,196.88/x
  3. Step 3: Cross multiply
    890,172.48x = 1,335,313 × 291,196.88
  4. Step 4: Simplify right side
    890,172.48x = 388,838,979,423.44
  5. Step 5: Solve for x
    x = 388,838,979,423.44/890,172.48
  6. Step 6: Final answer
    x = 436,813.08

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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.