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Finding the Fourth Proportional to 553,676.20, 830,514.30 and 376,529.20

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Solution

The fourth proportional to 553,676.20, 830,514.30 and 376,529.20 is: 564,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,676.20 : 830,514.30 = 376,529.20 : x
  2. Step 2: Convert to fraction form
    553,676.20/830,514.30 = 376,529.20/x
  3. Step 3: Cross multiply
    553,676.20x = 830,514.30 × 376,529.20
  4. Step 4: Simplify right side
    553,676.20x = 312,712,884,967.56
  5. Step 5: Solve for x
    x = 312,712,884,967.56/553,676.20
  6. Step 6: Final answer
    x = 564,793.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.