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Finding the Fourth Proportional to 557,008.68, 768,672.90 and 302,360.16

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Solution

The fourth proportional to 557,008.68, 768,672.90 and 302,360.16 is: 417,257.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,008.68 : 768,672.90 = 302,360.16 : x
  2. Step 2: Convert to fraction form
    557,008.68/768,672.90 = 302,360.16/x
  3. Step 3: Cross multiply
    557,008.68x = 768,672.90 × 302,360.16
  4. Step 4: Simplify right side
    557,008.68x = 232,416,061,031.66
  5. Step 5: Solve for x
    x = 232,416,061,031.66/557,008.68
  6. Step 6: Final answer
    x = 417,257.52

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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.