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Finding the Fourth Proportional to 546,868.60, 821,858.10 and 478,439.80

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Solution

The fourth proportional to 546,868.60, 821,858.10 and 478,439.80 is: 719,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,868.60 : 821,858.10 = 478,439.80 : x
  2. Step 2: Convert to fraction form
    546,868.60/821,858.10 = 478,439.80/x
  3. Step 3: Cross multiply
    546,868.60x = 821,858.10 × 478,439.80
  4. Step 4: Simplify right side
    546,868.60x = 393,209,624,992.38
  5. Step 5: Solve for x
    x = 393,209,624,992.38/546,868.60
  6. Step 6: Final answer
    x = 719,020.30

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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.