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Finding the Fourth Proportional to 442,728.30, 621,000.60 and 442,728.30

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Solution

The fourth proportional to 442,728.30, 621,000.60 and 442,728.30 is: 621,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,728.30 : 621,000.60 = 442,728.30 : x
  2. Step 2: Convert to fraction form
    442,728.30/621,000.60 = 442,728.30/x
  3. Step 3: Cross multiply
    442,728.30x = 621,000.60 × 442,728.30
  4. Step 4: Simplify right side
    442,728.30x = 274,934,539,936.98
  5. Step 5: Solve for x
    x = 274,934,539,936.98/442,728.30
  6. Step 6: Final answer
    x = 621,000.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.