Home / 390,036,015-585,045,825.76-94,932,781.24

Finding the Fourth Proportional to 390,036,015, 585,045,825.76 and 94,932,781.24

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Solution

The fourth proportional to 390,036,015, 585,045,825.76 and 94,932,781.24 is: 142,397,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,036,015 : 585,045,825.76 = 94,932,781.24 : x
  2. Step 2: Convert to fraction form
    390,036,015/585,045,825.76 = 94,932,781.24/x
  3. Step 3: Cross multiply
    390,036,015x = 585,045,825.76 × 94,932,781.24
  4. Step 4: Simplify right side
    390,036,015x = 55,540,027,392,249,232
  5. Step 5: Solve for x
    x = 55,540,027,392,249,232/390,036,015
  6. Step 6: Final answer
    x = 142,397,176.82

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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.