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Finding the Fourth Proportional to 628,251.20, 940,303.20 and 487,246.40

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Solution

The fourth proportional to 628,251.20, 940,303.20 and 487,246.40 is: 729,261.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,251.20 : 940,303.20 = 487,246.40 : x
  2. Step 2: Convert to fraction form
    628,251.20/940,303.20 = 487,246.40/x
  3. Step 3: Cross multiply
    628,251.20x = 940,303.20 × 487,246.40
  4. Step 4: Simplify right side
    628,251.20x = 458,159,349,108.48
  5. Step 5: Solve for x
    x = 458,159,349,108.48/628,251.20
  6. Step 6: Final answer
    x = 729,261.40

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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.