Home / 520,711,973.96-718,535,028.82-308,982,318.80

Finding the Fourth Proportional to 520,711,973.96, 718,535,028.82 and 308,982,318.80

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Solution

The fourth proportional to 520,711,973.96, 718,535,028.82 and 308,982,318.80 is: 426,367,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,711,973.96 : 718,535,028.82 = 308,982,318.80 : x
  2. Step 2: Convert to fraction form
    520,711,973.96/718,535,028.82 = 308,982,318.80/x
  3. Step 3: Cross multiply
    520,711,973.96x = 718,535,028.82 × 308,982,318.80
  4. Step 4: Simplify right side
    520,711,973.96x = 222,014,619,343,828,448
  5. Step 5: Solve for x
    x = 222,014,619,343,828,448/520,711,973.96
  6. Step 6: Final answer
    x = 426,367,417.01

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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.