Home / 716,560,048.01-988,821,059.47-399,036,672.74

Finding the Fourth Proportional to 716,560,048.01, 988,821,059.47 and 399,036,672.74

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Solution

The fourth proportional to 716,560,048.01, 988,821,059.47 and 399,036,672.74 is: 550,652,895.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,560,048.01 : 988,821,059.47 = 399,036,672.74 : x
  2. Step 2: Convert to fraction form
    716,560,048.01/988,821,059.47 = 399,036,672.74/x
  3. Step 3: Cross multiply
    716,560,048.01x = 988,821,059.47 × 399,036,672.74
  4. Step 4: Simplify right side
    716,560,048.01x = 394,575,865,507,624,896
  5. Step 5: Solve for x
    x = 394,575,865,507,624,896/716,560,048.01
  6. Step 6: Final answer
    x = 550,652,895.88

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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.