Home / 390,010,982.80-585,165,773.40-383,889,715.60

Finding the Fourth Proportional to 390,010,982.80, 585,165,773.40 and 383,889,715.60

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Solution

The fourth proportional to 390,010,982.80, 585,165,773.40 and 383,889,715.60 is: 575,981,529.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,010,982.80 : 585,165,773.40 = 383,889,715.60 : x
  2. Step 2: Convert to fraction form
    390,010,982.80/585,165,773.40 = 383,889,715.60/x
  3. Step 3: Cross multiply
    390,010,982.80x = 585,165,773.40 × 383,889,715.60
  4. Step 4: Simplify right side
    390,010,982.80x = 224,639,122,329,380,064
  5. Step 5: Solve for x
    x = 224,639,122,329,380,064/390,010,982.80
  6. Step 6: Final answer
    x = 575,981,529.33

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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.