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Finding the Fourth Proportional to 648,603.90, 972,387.45 and 274,319.10

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Solution

The fourth proportional to 648,603.90, 972,387.45 and 274,319.10 is: 411,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,603.90 : 972,387.45 = 274,319.10 : x
  2. Step 2: Convert to fraction form
    648,603.90/972,387.45 = 274,319.10/x
  3. Step 3: Cross multiply
    648,603.90x = 972,387.45 × 274,319.10
  4. Step 4: Simplify right side
    648,603.90x = 266,744,450,135.30
  5. Step 5: Solve for x
    x = 266,744,450,135.30/648,603.90
  6. Step 6: Final answer
    x = 411,259.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.