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Finding the Fourth Proportional to 579,767.70, 869,219.55 and 299,486.10

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Solution

The fourth proportional to 579,767.70, 869,219.55 and 299,486.10 is: 449,006.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,767.70 : 869,219.55 = 299,486.10 : x
  2. Step 2: Convert to fraction form
    579,767.70/869,219.55 = 299,486.10/x
  3. Step 3: Cross multiply
    579,767.70x = 869,219.55 × 299,486.10
  4. Step 4: Simplify right side
    579,767.70x = 260,319,173,073.26
  5. Step 5: Solve for x
    x = 260,319,173,073.26/579,767.70
  6. Step 6: Final answer
    x = 449,006.00

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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.