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Finding the Fourth Proportional to 652,056.20, 978,660.30 and 385,483.40

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Solution

The fourth proportional to 652,056.20, 978,660.30 and 385,483.40 is: 578,565.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,056.20 : 978,660.30 = 385,483.40 : x
  2. Step 2: Convert to fraction form
    652,056.20/978,660.30 = 385,483.40/x
  3. Step 3: Cross multiply
    652,056.20x = 978,660.30 × 385,483.40
  4. Step 4: Simplify right side
    652,056.20x = 377,257,299,889.02
  5. Step 5: Solve for x
    x = 377,257,299,889.02/652,056.20
  6. Step 6: Final answer
    x = 578,565.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.