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Finding the Fourth Proportional to 347,651.40, 487,411.80 and 347,651.40

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Solution

The fourth proportional to 347,651.40, 487,411.80 and 347,651.40 is: 487,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,651.40 : 487,411.80 = 347,651.40 : x
  2. Step 2: Convert to fraction form
    347,651.40/487,411.80 = 347,651.40/x
  3. Step 3: Cross multiply
    347,651.40x = 487,411.80 × 347,651.40
  4. Step 4: Simplify right side
    347,651.40x = 169,449,394,646.52
  5. Step 5: Solve for x
    x = 169,449,394,646.52/347,651.40
  6. Step 6: Final answer
    x = 487,411.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.