Home / 821,334.51-1,229,420.70-522,152.91

Finding the Fourth Proportional to 821,334.51, 1,229,420.70 and 522,152.91

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Solution

The fourth proportional to 821,334.51, 1,229,420.70 and 522,152.91 is: 781,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,334.51 : 1,229,420.70 = 522,152.91 : x
  2. Step 2: Convert to fraction form
    821,334.51/1,229,420.70 = 522,152.91/x
  3. Step 3: Cross multiply
    821,334.51x = 1,229,420.70 × 522,152.91
  4. Step 4: Simplify right side
    821,334.51x = 641,945,596,119.24
  5. Step 5: Solve for x
    x = 641,945,596,119.24/821,334.51
  6. Step 6: Final answer
    x = 781,588.49

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Double scale
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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.