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Finding the Fourth Proportional to 555,328.40, 832,992.60 and 318,476.30

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Solution

The fourth proportional to 555,328.40, 832,992.60 and 318,476.30 is: 477,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,328.40 : 832,992.60 = 318,476.30 : x
  2. Step 2: Convert to fraction form
    555,328.40/832,992.60 = 318,476.30/x
  3. Step 3: Cross multiply
    555,328.40x = 832,992.60 × 318,476.30
  4. Step 4: Simplify right side
    555,328.40x = 265,288,401,175.38
  5. Step 5: Solve for x
    x = 265,288,401,175.38/555,328.40
  6. Step 6: Final answer
    x = 477,714.45

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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.