Home / 386,451,147.60-579,676,721.40-309,923,643.60

Finding the Fourth Proportional to 386,451,147.60, 579,676,721.40 and 309,923,643.60

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Solution

The fourth proportional to 386,451,147.60, 579,676,721.40 and 309,923,643.60 is: 464,885,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,451,147.60 : 579,676,721.40 = 309,923,643.60 : x
  2. Step 2: Convert to fraction form
    386,451,147.60/579,676,721.40 = 309,923,643.60/x
  3. Step 3: Cross multiply
    386,451,147.60x = 579,676,721.40 × 309,923,643.60
  4. Step 4: Simplify right side
    386,451,147.60x = 179,655,521,606,390,112
  5. Step 5: Solve for x
    x = 179,655,521,606,390,112/386,451,147.60
  6. Step 6: Final answer
    x = 464,885,465.40

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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.