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Finding the Fourth Proportional to 630,375.87, 869,901.48 and 343,895.88

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Solution

The fourth proportional to 630,375.87, 869,901.48 and 343,895.88 is: 474,566.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,375.87 : 869,901.48 = 343,895.88 : x
  2. Step 2: Convert to fraction form
    630,375.87/869,901.48 = 343,895.88/x
  3. Step 3: Cross multiply
    630,375.87x = 869,901.48 × 343,895.88
  4. Step 4: Simplify right side
    630,375.87x = 299,155,534,977.90
  5. Step 5: Solve for x
    x = 299,155,534,977.90/630,375.87
  6. Step 6: Final answer
    x = 474,566.92

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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.