Home / 639,569.40-959,094.90-218,628.60

Finding the Fourth Proportional to 639,569.40, 959,094.90 and 218,628.60

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Solution

The fourth proportional to 639,569.40, 959,094.90 and 218,628.60 is: 327,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,569.40 : 959,094.90 = 218,628.60 : x
  2. Step 2: Convert to fraction form
    639,569.40/959,094.90 = 218,628.60/x
  3. Step 3: Cross multiply
    639,569.40x = 959,094.90 × 218,628.60
  4. Step 4: Simplify right side
    639,569.40x = 209,685,575,254.14
  5. Step 5: Solve for x
    x = 209,685,575,254.14/639,569.40
  6. Step 6: Final answer
    x = 327,854.30

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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.