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Finding the Fourth Proportional to 614,196.90, 921,878.55 and 378,000.90

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Solution

The fourth proportional to 614,196.90, 921,878.55 and 378,000.90 is: 567,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,196.90 : 921,878.55 = 378,000.90 : x
  2. Step 2: Convert to fraction form
    614,196.90/921,878.55 = 378,000.90/x
  3. Step 3: Cross multiply
    614,196.90x = 921,878.55 × 378,000.90
  4. Step 4: Simplify right side
    614,196.90x = 348,470,921,590.70
  5. Step 5: Solve for x
    x = 348,470,921,590.70/614,196.90
  6. Step 6: Final answer
    x = 567,360.27

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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.