Home / 451,415.56-623,151.90-315,981.40

Finding the Fourth Proportional to 451,415.56, 623,151.90 and 315,981.40

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Solution

The fourth proportional to 451,415.56, 623,151.90 and 315,981.40 is: 436,193.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,415.56 : 623,151.90 = 315,981.40 : x
  2. Step 2: Convert to fraction form
    451,415.56/623,151.90 = 315,981.40/x
  3. Step 3: Cross multiply
    451,415.56x = 623,151.90 × 315,981.40
  4. Step 4: Simplify right side
    451,415.56x = 196,904,409,774.66
  5. Step 5: Solve for x
    x = 196,904,409,774.66/451,415.56
  6. Step 6: Final answer
    x = 436,193.23

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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.