Home / 677,469.03-934,905.78-390,989.13

Finding the Fourth Proportional to 677,469.03, 934,905.78 and 390,989.13

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Solution

The fourth proportional to 677,469.03, 934,905.78 and 390,989.13 is: 539,564.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,469.03 : 934,905.78 = 390,989.13 : x
  2. Step 2: Convert to fraction form
    677,469.03/934,905.78 = 390,989.13/x
  3. Step 3: Cross multiply
    677,469.03x = 934,905.78 × 390,989.13
  4. Step 4: Simplify right side
    677,469.03x = 365,537,997,554.17
  5. Step 5: Solve for x
    x = 365,537,997,554.17/677,469.03
  6. Step 6: Final answer
    x = 539,564.14

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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.