Home / 426,774.18-640,153.98-127,255.62

Finding the Fourth Proportional to 426,774.18, 640,153.98 and 127,255.62

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Solution

The fourth proportional to 426,774.18, 640,153.98 and 127,255.62 is: 190,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,774.18 : 640,153.98 = 127,255.62 : x
  2. Step 2: Convert to fraction form
    426,774.18/640,153.98 = 127,255.62/x
  3. Step 3: Cross multiply
    426,774.18x = 640,153.98 × 127,255.62
  4. Step 4: Simplify right side
    426,774.18x = 81,463,191,620.37
  5. Step 5: Solve for x
    x = 81,463,191,620.37/426,774.18
  6. Step 6: Final answer
    x = 190,881.26

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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.