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Finding the Fourth Proportional to 440,010.40, 660,015.60 and 260,384.80

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Solution

The fourth proportional to 440,010.40, 660,015.60 and 260,384.80 is: 390,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,010.40 : 660,015.60 = 260,384.80 : x
  2. Step 2: Convert to fraction form
    440,010.40/660,015.60 = 260,384.80/x
  3. Step 3: Cross multiply
    440,010.40x = 660,015.60 × 260,384.80
  4. Step 4: Simplify right side
    440,010.40x = 171,858,030,002.88
  5. Step 5: Solve for x
    x = 171,858,030,002.88/440,010.40
  6. Step 6: Final answer
    x = 390,577.20

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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.