Home / 711,457,281.88-981,841,730.76-393,917,533.84

Finding the Fourth Proportional to 711,457,281.88, 981,841,730.76 and 393,917,533.84

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Solution

The fourth proportional to 711,457,281.88, 981,841,730.76 and 393,917,533.84 is: 543,623,184.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,457,281.88 : 981,841,730.76 = 393,917,533.84 : x
  2. Step 2: Convert to fraction form
    711,457,281.88/981,841,730.76 = 393,917,533.84/x
  3. Step 3: Cross multiply
    711,457,281.88x = 981,841,730.76 × 393,917,533.84
  4. Step 4: Simplify right side
    711,457,281.88x = 386,764,673,200,206,848
  5. Step 5: Solve for x
    x = 386,764,673,200,206,848/711,457,281.88
  6. Step 6: Final answer
    x = 543,623,184.49

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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.