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Finding the Fourth Proportional to 486,050, 670,774.92 and 284,910.80

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Solution

The fourth proportional to 486,050, 670,774.92 and 284,910.80 is: 393,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,050 : 670,774.92 = 284,910.80 : x
  2. Step 2: Convert to fraction form
    486,050/670,774.92 = 284,910.80/x
  3. Step 3: Cross multiply
    486,050x = 670,774.92 × 284,910.80
  4. Step 4: Simplify right side
    486,050x = 191,111,019,077.14
  5. Step 5: Solve for x
    x = 191,111,019,077.14/486,050
  6. Step 6: Final answer
    x = 393,192.10

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1.5x scale

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.