Home / 654,435.90-903,281.91-400,000.38

Finding the Fourth Proportional to 654,435.90, 903,281.91 and 400,000.38

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Solution

The fourth proportional to 654,435.90, 903,281.91 and 400,000.38 is: 552,098.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,435.90 : 903,281.91 = 400,000.38 : x
  2. Step 2: Convert to fraction form
    654,435.90/903,281.91 = 400,000.38/x
  3. Step 3: Cross multiply
    654,435.90x = 903,281.91 × 400,000.38
  4. Step 4: Simplify right side
    654,435.90x = 361,313,107,247.13
  5. Step 5: Solve for x
    x = 361,313,107,247.13/654,435.90
  6. Step 6: Final answer
    x = 552,098.54

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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.