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Finding the Fourth Proportional to 551,118.87, 760,491.54 and 309,346.02

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Solution

The fourth proportional to 551,118.87, 760,491.54 and 309,346.02 is: 426,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,118.87 : 760,491.54 = 309,346.02 : x
  2. Step 2: Convert to fraction form
    551,118.87/760,491.54 = 309,346.02/x
  3. Step 3: Cross multiply
    551,118.87x = 760,491.54 × 309,346.02
  4. Step 4: Simplify right side
    551,118.87x = 235,255,031,142.67
  5. Step 5: Solve for x
    x = 235,255,031,142.67/551,118.87
  6. Step 6: Final answer
    x = 426,868.04

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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.