Home / 393,970,570.81-543,669,904.83-215,346,444.28

Finding the Fourth Proportional to 393,970,570.81, 543,669,904.83 and 215,346,444.28

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Solution

The fourth proportional to 393,970,570.81, 543,669,904.83 and 215,346,444.28 is: 297,172,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,970,570.81 : 543,669,904.83 = 215,346,444.28 : x
  2. Step 2: Convert to fraction form
    393,970,570.81/543,669,904.83 = 215,346,444.28/x
  3. Step 3: Cross multiply
    393,970,570.81x = 543,669,904.83 × 215,346,444.28
  4. Step 4: Simplify right side
    393,970,570.81x = 117,077,380,866,634,880
  5. Step 5: Solve for x
    x = 117,077,380,866,634,880/393,970,570.81
  6. Step 6: Final answer
    x = 297,172,909.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.