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Finding the Fourth Proportional to 606,604.08, 909,168.20 and 429,162.24

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Solution

The fourth proportional to 606,604.08, 909,168.20 and 429,162.24 is: 643,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,604.08 : 909,168.20 = 429,162.24 : x
  2. Step 2: Convert to fraction form
    606,604.08/909,168.20 = 429,162.24/x
  3. Step 3: Cross multiply
    606,604.08x = 909,168.20 × 429,162.24
  4. Step 4: Simplify right side
    606,604.08x = 390,180,661,248.77
  5. Step 5: Solve for x
    x = 390,180,661,248.77/606,604.08
  6. Step 6: Final answer
    x = 643,221.29

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1.5x scale

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.