Home / 625,429,507.44-862,734,131.82-390,071,557.56

Finding the Fourth Proportional to 625,429,507.44, 862,734,131.82 and 390,071,557.56

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Solution

The fourth proportional to 625,429,507.44, 862,734,131.82 and 390,071,557.56 is: 538,075,102.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,429,507.44 : 862,734,131.82 = 390,071,557.56 : x
  2. Step 2: Convert to fraction form
    625,429,507.44/862,734,131.82 = 390,071,557.56/x
  3. Step 3: Cross multiply
    625,429,507.44x = 862,734,131.82 × 390,071,557.56
  4. Step 4: Simplify right side
    625,429,507.44x = 336,528,046,559,201,792
  5. Step 5: Solve for x
    x = 336,528,046,559,201,792/625,429,507.44
  6. Step 6: Final answer
    x = 538,075,102.88

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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.