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Finding the Fourth Proportional to 984,641.60, 1,476,962.40 and 978,420.80

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Solution

The fourth proportional to 984,641.60, 1,476,962.40 and 978,420.80 is: 1,467,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,641.60 : 1,476,962.40 = 978,420.80 : x
  2. Step 2: Convert to fraction form
    984,641.60/1,476,962.40 = 978,420.80/x
  3. Step 3: Cross multiply
    984,641.60x = 1,476,962.40 × 978,420.80
  4. Step 4: Simplify right side
    984,641.60x = 1,445,090,732,977.92
  5. Step 5: Solve for x
    x = 1,445,090,732,977.92/984,641.60
  6. Step 6: Final answer
    x = 1,467,631.20

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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.