Home / 390,388,825.35-585,680,158.54-193,744,528.30

Finding the Fourth Proportional to 390,388,825.35, 585,680,158.54 and 193,744,528.30

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Solution

The fourth proportional to 390,388,825.35, 585,680,158.54 and 193,744,528.30 is: 290,664,892.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,388,825.35 : 585,680,158.54 = 193,744,528.30 : x
  2. Step 2: Convert to fraction form
    390,388,825.35/585,680,158.54 = 193,744,528.30/x
  3. Step 3: Cross multiply
    390,388,825.35x = 585,680,158.54 × 193,744,528.30
  4. Step 4: Simplify right side
    390,388,825.35x = 113,472,326,051,001,520
  5. Step 5: Solve for x
    x = 113,472,326,051,001,520/390,388,825.35
  6. Step 6: Final answer
    x = 290,664,892.75

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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.