Home / 340,405,138.40-509,851,880.40-279,938,962.40

Finding the Fourth Proportional to 340,405,138.40, 509,851,880.40 and 279,938,962.40

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Solution

The fourth proportional to 340,405,138.40, 509,851,880.40 and 279,938,962.40 is: 419,286,874.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,405,138.40 : 509,851,880.40 = 279,938,962.40 : x
  2. Step 2: Convert to fraction form
    340,405,138.40/509,851,880.40 = 279,938,962.40/x
  3. Step 3: Cross multiply
    340,405,138.40x = 509,851,880.40 × 279,938,962.40
  4. Step 4: Simplify right side
    340,405,138.40x = 142,727,406,376,864,880
  5. Step 5: Solve for x
    x = 142,727,406,376,864,880/340,405,138.40
  6. Step 6: Final answer
    x = 419,286,874.01

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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.