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Finding the Fourth Proportional to 577,041.10, 865,561.65 and 311,320.60

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Solution

The fourth proportional to 577,041.10, 865,561.65 and 311,320.60 is: 466,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,041.10 : 865,561.65 = 311,320.60 : x
  2. Step 2: Convert to fraction form
    577,041.10/865,561.65 = 311,320.60/x
  3. Step 3: Cross multiply
    577,041.10x = 865,561.65 × 311,320.60
  4. Step 4: Simplify right side
    577,041.10x = 269,467,172,214.99
  5. Step 5: Solve for x
    x = 269,467,172,214.99/577,041.10
  6. Step 6: Final answer
    x = 466,980.90

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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.