Home / 390,388,827.86-585,680,162.28-193,744,530.80

Finding the Fourth Proportional to 390,388,827.86, 585,680,162.28 and 193,744,530.80

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Solution

The fourth proportional to 390,388,827.86, 585,680,162.28 and 193,744,530.80 is: 290,664,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,388,827.86 : 585,680,162.28 = 193,744,530.80 : x
  2. Step 2: Convert to fraction form
    390,388,827.86/585,680,162.28 = 193,744,530.80/x
  3. Step 3: Cross multiply
    390,388,827.86x = 585,680,162.28 × 193,744,530.80
  4. Step 4: Simplify right side
    390,388,827.86x = 113,472,328,239,806,464
  5. Step 5: Solve for x
    x = 113,472,328,239,806,464/390,388,827.86
  6. Step 6: Final answer
    x = 290,664,896.49

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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.