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Finding the Fourth Proportional to 347,828.80, 488,360 and 347,828.80

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Solution

The fourth proportional to 347,828.80, 488,360 and 347,828.80 is: 488,360

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,828.80 : 488,360 = 347,828.80 : x
  2. Step 2: Convert to fraction form
    347,828.80/488,360 = 347,828.80/x
  3. Step 3: Cross multiply
    347,828.80x = 488,360 × 347,828.80
  4. Step 4: Simplify right side
    347,828.80x = 169,865,672,768
  5. Step 5: Solve for x
    x = 169,865,672,768/347,828.80
  6. Step 6: Final answer
    x = 488,360

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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.