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Finding the Fourth Proportional to 560,421.32, 772,477.97 and 379,067.11

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Solution

The fourth proportional to 560,421.32, 772,477.97 and 379,067.11 is: 522,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,421.32 : 772,477.97 = 379,067.11 : x
  2. Step 2: Convert to fraction form
    560,421.32/772,477.97 = 379,067.11/x
  3. Step 3: Cross multiply
    560,421.32x = 772,477.97 × 379,067.11
  4. Step 4: Simplify right side
    560,421.32x = 292,820,987,800.04
  5. Step 5: Solve for x
    x = 292,820,987,800.04/560,421.32
  6. Step 6: Final answer
    x = 522,501.52

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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.