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Finding the Fourth Proportional to 440,185.20, 660,277.80 and 434,280.30

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Solution

The fourth proportional to 440,185.20, 660,277.80 and 434,280.30 is: 651,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,185.20 : 660,277.80 = 434,280.30 : x
  2. Step 2: Convert to fraction form
    440,185.20/660,277.80 = 434,280.30/x
  3. Step 3: Cross multiply
    440,185.20x = 660,277.80 × 434,280.30
  4. Step 4: Simplify right side
    440,185.20x = 286,745,641,067.34
  5. Step 5: Solve for x
    x = 286,745,641,067.34/440,185.20
  6. Step 6: Final answer
    x = 651,420.45

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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.