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Finding the Fourth Proportional to 628,216.40, 940,769.40 and 503,800.40

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Solution

The fourth proportional to 628,216.40, 940,769.40 and 503,800.40 is: 754,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,216.40 : 940,769.40 = 503,800.40 : x
  2. Step 2: Convert to fraction form
    628,216.40/940,769.40 = 503,800.40/x
  3. Step 3: Cross multiply
    628,216.40x = 940,769.40 × 503,800.40
  4. Step 4: Simplify right side
    628,216.40x = 473,960,000,027.76
  5. Step 5: Solve for x
    x = 473,960,000,027.76/628,216.40
  6. Step 6: Final answer
    x = 754,453.40

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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.