Home / 420,281,401.20-628,721,490.60-369,263,065.20

Finding the Fourth Proportional to 420,281,401.20, 628,721,490.60 and 369,263,065.20

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Solution

The fourth proportional to 420,281,401.20, 628,721,490.60 and 369,263,065.20 is: 552,400,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,281,401.20 : 628,721,490.60 = 369,263,065.20 : x
  2. Step 2: Convert to fraction form
    420,281,401.20/628,721,490.60 = 369,263,065.20/x
  3. Step 3: Cross multiply
    420,281,401.20x = 628,721,490.60 × 369,263,065.20
  4. Step 4: Simplify right side
    420,281,401.20x = 232,163,624,776,068,992
  5. Step 5: Solve for x
    x = 232,163,624,776,068,992/420,281,401.20
  6. Step 6: Final answer
    x = 552,400,425.32

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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.