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Finding the Fourth Proportional to 648,126.86, 894,281.51 and 372,431.45

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Solution

The fourth proportional to 648,126.86, 894,281.51 and 372,431.45 is: 513,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,126.86 : 894,281.51 = 372,431.45 : x
  2. Step 2: Convert to fraction form
    648,126.86/894,281.51 = 372,431.45/x
  3. Step 3: Cross multiply
    648,126.86x = 894,281.51 × 372,431.45
  4. Step 4: Simplify right side
    648,126.86x = 333,058,562,644.27
  5. Step 5: Solve for x
    x = 333,058,562,644.27/648,126.86
  6. Step 6: Final answer
    x = 513,878.66

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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.