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Finding the Fourth Proportional to 519,421.60, 779,132.40 and 297,623.20

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Solution

The fourth proportional to 519,421.60, 779,132.40 and 297,623.20 is: 446,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,421.60 : 779,132.40 = 297,623.20 : x
  2. Step 2: Convert to fraction form
    519,421.60/779,132.40 = 297,623.20/x
  3. Step 3: Cross multiply
    519,421.60x = 779,132.40 × 297,623.20
  4. Step 4: Simplify right side
    519,421.60x = 231,887,878,111.68
  5. Step 5: Solve for x
    x = 231,887,878,111.68/519,421.60
  6. Step 6: Final answer
    x = 446,434.80

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Similar ratio
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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.