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Finding the Fourth Proportional to 578,980.64, 798,763.40 and 361,061.12

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Solution

The fourth proportional to 578,980.64, 798,763.40 and 361,061.12 is: 498,120.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,980.64 : 798,763.40 = 361,061.12 : x
  2. Step 2: Convert to fraction form
    578,980.64/798,763.40 = 361,061.12/x
  3. Step 3: Cross multiply
    578,980.64x = 798,763.40 × 361,061.12
  4. Step 4: Simplify right side
    578,980.64x = 288,402,407,819.01
  5. Step 5: Solve for x
    x = 288,402,407,819.01/578,980.64
  6. Step 6: Final answer
    x = 498,120.99

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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.