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Finding the Fourth Proportional to 648,438.57, 894,841.72 and 376,573.25

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Solution

The fourth proportional to 648,438.57, 894,841.72 and 376,573.25 is: 519,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,438.57 : 894,841.72 = 376,573.25 : x
  2. Step 2: Convert to fraction form
    648,438.57/894,841.72 = 376,573.25/x
  3. Step 3: Cross multiply
    648,438.57x = 894,841.72 × 376,573.25
  4. Step 4: Simplify right side
    648,438.57x = 336,973,456,031.66
  5. Step 5: Solve for x
    x = 336,973,456,031.66/648,438.57
  6. Step 6: Final answer
    x = 519,669.05

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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.