Home / 390,212,860.32-585,318,985.92-117,583,630.56

Finding the Fourth Proportional to 390,212,860.32, 585,318,985.92 and 117,583,630.56

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Solution

The fourth proportional to 390,212,860.32, 585,318,985.92 and 117,583,630.56 is: 176,375,354.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,212,860.32 : 585,318,985.92 = 117,583,630.56 : x
  2. Step 2: Convert to fraction form
    390,212,860.32/585,318,985.92 = 117,583,630.56/x
  3. Step 3: Cross multiply
    390,212,860.32x = 585,318,985.92 × 117,583,630.56
  4. Step 4: Simplify right side
    390,212,860.32x = 68,823,931,400,171,120
  5. Step 5: Solve for x
    x = 68,823,931,400,171,120/390,212,860.32
  6. Step 6: Final answer
    x = 176,375,354.07

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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.