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Finding the Fourth Proportional to 556,812.80, 835,219.20 and 415,095.20

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Solution

The fourth proportional to 556,812.80, 835,219.20 and 415,095.20 is: 622,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,812.80 : 835,219.20 = 415,095.20 : x
  2. Step 2: Convert to fraction form
    556,812.80/835,219.20 = 415,095.20/x
  3. Step 3: Cross multiply
    556,812.80x = 835,219.20 × 415,095.20
  4. Step 4: Simplify right side
    556,812.80x = 346,695,480,867.84
  5. Step 5: Solve for x
    x = 346,695,480,867.84/556,812.80
  6. Step 6: Final answer
    x = 622,642.80

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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.