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Finding the Fourth Proportional to 484,633.34, 668,869.20 and 291,148.76

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Solution

The fourth proportional to 484,633.34, 668,869.20 and 291,148.76 is: 401,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,633.34 : 668,869.20 = 291,148.76 : x
  2. Step 2: Convert to fraction form
    484,633.34/668,869.20 = 291,148.76/x
  3. Step 3: Cross multiply
    484,633.34x = 668,869.20 × 291,148.76
  4. Step 4: Simplify right side
    484,633.34x = 194,740,434,837.85
  5. Step 5: Solve for x
    x = 194,740,434,837.85/484,633.34
  6. Step 6: Final answer
    x = 401,830.46

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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.