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Finding the Fourth Proportional to 568,129.20, 784,017.52 and 313,480.32

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Solution

The fourth proportional to 568,129.20, 784,017.52 and 313,480.32 is: 432,602.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,129.20 : 784,017.52 = 313,480.32 : x
  2. Step 2: Convert to fraction form
    568,129.20/784,017.52 = 313,480.32/x
  3. Step 3: Cross multiply
    568,129.20x = 784,017.52 × 313,480.32
  4. Step 4: Simplify right side
    568,129.20x = 245,774,063,055.21
  5. Step 5: Solve for x
    x = 245,774,063,055.21/568,129.20
  6. Step 6: Final answer
    x = 432,602.41

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1.5x scale

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.