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Finding the Fourth Proportional to 557,998.58, 770,098.24 and 316,255.20

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Solution

The fourth proportional to 557,998.58, 770,098.24 and 316,255.20 is: 436,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,998.58 : 770,098.24 = 316,255.20 : x
  2. Step 2: Convert to fraction form
    557,998.58/770,098.24 = 316,255.20/x
  3. Step 3: Cross multiply
    557,998.58x = 770,098.24 × 316,255.20
  4. Step 4: Simplify right side
    557,998.58x = 243,547,572,910.85
  5. Step 5: Solve for x
    x = 243,547,572,910.85/557,998.58
  6. Step 6: Final answer
    x = 436,466.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.