Home / 890,388.61-1,228,767.65-508,408.45

Finding the Fourth Proportional to 890,388.61, 1,228,767.65 and 508,408.45

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Solution

The fourth proportional to 890,388.61, 1,228,767.65 and 508,408.45 is: 701,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,388.61 : 1,228,767.65 = 508,408.45 : x
  2. Step 2: Convert to fraction form
    890,388.61/1,228,767.65 = 508,408.45/x
  3. Step 3: Cross multiply
    890,388.61x = 1,228,767.65 × 508,408.45
  4. Step 4: Simplify right side
    890,388.61x = 624,715,856,346.64
  5. Step 5: Solve for x
    x = 624,715,856,346.64/890,388.61
  6. Step 6: Final answer
    x = 701,621.57

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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.