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Finding the Fourth Proportional to 624,118.40, 935,102.40 and 291,011.20

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Solution

The fourth proportional to 624,118.40, 935,102.40 and 291,011.20 is: 436,015.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,118.40 : 935,102.40 = 291,011.20 : x
  2. Step 2: Convert to fraction form
    624,118.40/935,102.40 = 291,011.20/x
  3. Step 3: Cross multiply
    624,118.40x = 935,102.40 × 291,011.20
  4. Step 4: Simplify right side
    624,118.40x = 272,125,271,546.88
  5. Step 5: Solve for x
    x = 272,125,271,546.88/624,118.40
  6. Step 6: Final answer
    x = 436,015.46

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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.