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Finding the Fourth Proportional to 551,390.40, 827,085.60 and 507,844.80

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Solution

The fourth proportional to 551,390.40, 827,085.60 and 507,844.80 is: 761,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,390.40 : 827,085.60 = 507,844.80 : x
  2. Step 2: Convert to fraction form
    551,390.40/827,085.60 = 507,844.80/x
  3. Step 3: Cross multiply
    551,390.40x = 827,085.60 × 507,844.80
  4. Step 4: Simplify right side
    551,390.40x = 420,031,121,114.88
  5. Step 5: Solve for x
    x = 420,031,121,114.88/551,390.40
  6. Step 6: Final answer
    x = 761,767.20

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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.