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Finding the Fourth Proportional to 720,195.32, 993,973.65 and 429,819.22

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Solution

The fourth proportional to 720,195.32, 993,973.65 and 429,819.22 is: 593,212.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,195.32 : 993,973.65 = 429,819.22 : x
  2. Step 2: Convert to fraction form
    720,195.32/993,973.65 = 429,819.22/x
  3. Step 3: Cross multiply
    720,195.32x = 993,973.65 × 429,819.22
  4. Step 4: Simplify right side
    720,195.32x = 427,228,973,973.69
  5. Step 5: Solve for x
    x = 427,228,973,973.69/720,195.32
  6. Step 6: Final answer
    x = 593,212.65

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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.