Home / 815,107.28-1,221,070.28-533,771.60

Finding the Fourth Proportional to 815,107.28, 1,221,070.28 and 533,771.60

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Solution

The fourth proportional to 815,107.28, 1,221,070.28 and 533,771.60 is: 799,615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,107.28 : 1,221,070.28 = 533,771.60 : x
  2. Step 2: Convert to fraction form
    815,107.28/1,221,070.28 = 533,771.60/x
  3. Step 3: Cross multiply
    815,107.28x = 1,221,070.28 × 533,771.60
  4. Step 4: Simplify right side
    815,107.28x = 651,772,637,068.05
  5. Step 5: Solve for x
    x = 651,772,637,068.05/815,107.28
  6. Step 6: Final answer
    x = 799,615.77

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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.