Home / 445,827,765.40-668,741,648.10-139,080,020.20

Finding the Fourth Proportional to 445,827,765.40, 668,741,648.10 and 139,080,020.20

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Solution

The fourth proportional to 445,827,765.40, 668,741,648.10 and 139,080,020.20 is: 208,620,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,827,765.40 : 668,741,648.10 = 139,080,020.20 : x
  2. Step 2: Convert to fraction form
    445,827,765.40/668,741,648.10 = 139,080,020.20/x
  3. Step 3: Cross multiply
    445,827,765.40x = 668,741,648.10 × 139,080,020.20
  4. Step 4: Simplify right side
    445,827,765.40x = 93,008,601,926,329,280
  5. Step 5: Solve for x
    x = 93,008,601,926,329,280/445,827,765.40
  6. Step 6: Final answer
    x = 208,620,030.30

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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.