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Finding the Fourth Proportional to 668,384.65, 1,003,069.05 and 443,670.40

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Solution

The fourth proportional to 668,384.65, 1,003,069.05 and 443,670.40 is: 665,832.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,384.65 : 1,003,069.05 = 443,670.40 : x
  2. Step 2: Convert to fraction form
    668,384.65/1,003,069.05 = 443,670.40/x
  3. Step 3: Cross multiply
    668,384.65x = 1,003,069.05 × 443,670.40
  4. Step 4: Simplify right side
    668,384.65x = 445,032,046,641.12
  5. Step 5: Solve for x
    x = 445,032,046,641.12/668,384.65
  6. Step 6: Final answer
    x = 665,832.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.