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Finding the Fourth Proportional to 978,037.20, 1,467,055.80 and 558,133.20

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Solution

The fourth proportional to 978,037.20, 1,467,055.80 and 558,133.20 is: 837,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,037.20 : 1,467,055.80 = 558,133.20 : x
  2. Step 2: Convert to fraction form
    978,037.20/1,467,055.80 = 558,133.20/x
  3. Step 3: Cross multiply
    978,037.20x = 1,467,055.80 × 558,133.20
  4. Step 4: Simplify right side
    978,037.20x = 818,812,548,232.56
  5. Step 5: Solve for x
    x = 818,812,548,232.56/978,037.20
  6. Step 6: Final answer
    x = 837,199.80

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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.