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Finding the Fourth Proportional to 827,408.90, 1,240,230.45 and 471,656.90

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Solution

The fourth proportional to 827,408.90, 1,240,230.45 and 471,656.90 is: 706,982.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,408.90 : 1,240,230.45 = 471,656.90 : x
  2. Step 2: Convert to fraction form
    827,408.90/1,240,230.45 = 471,656.90/x
  3. Step 3: Cross multiply
    827,408.90x = 1,240,230.45 × 471,656.90
  4. Step 4: Simplify right side
    827,408.90x = 584,963,249,332.61
  5. Step 5: Solve for x
    x = 584,963,249,332.61/827,408.90
  6. Step 6: Final answer
    x = 706,982.06

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Double scale
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1.5x scale

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.