Home / 640,024.11-883,443.75-509,441.30

Finding the Fourth Proportional to 640,024.11, 883,443.75 and 509,441.30

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Solution

The fourth proportional to 640,024.11, 883,443.75 and 509,441.30 is: 703,196.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,024.11 : 883,443.75 = 509,441.30 : x
  2. Step 2: Convert to fraction form
    640,024.11/883,443.75 = 509,441.30/x
  3. Step 3: Cross multiply
    640,024.11x = 883,443.75 × 509,441.30
  4. Step 4: Simplify right side
    640,024.11x = 450,062,728,059.66
  5. Step 5: Solve for x
    x = 450,062,728,059.66/640,024.11
  6. Step 6: Final answer
    x = 703,196.52

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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.