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Finding the Fourth Proportional to 502,431.87, 693,079.15 and 318,333.63

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Solution

The fourth proportional to 502,431.87, 693,079.15 and 318,333.63 is: 439,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,431.87 : 693,079.15 = 318,333.63 : x
  2. Step 2: Convert to fraction form
    502,431.87/693,079.15 = 318,333.63/x
  3. Step 3: Cross multiply
    502,431.87x = 693,079.15 × 318,333.63
  4. Step 4: Simplify right side
    502,431.87x = 220,630,401,696.82
  5. Step 5: Solve for x
    x = 220,630,401,696.82/502,431.87
  6. Step 6: Final answer
    x = 439,125.01

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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.