Home / 691,927,322.88-954,859,082.94-390,576,079.20

Finding the Fourth Proportional to 691,927,322.88, 954,859,082.94 and 390,576,079.20

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Solution

The fourth proportional to 691,927,322.88, 954,859,082.94 and 390,576,079.20 is: 538,994,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,927,322.88 : 954,859,082.94 = 390,576,079.20 : x
  2. Step 2: Convert to fraction form
    691,927,322.88/954,859,082.94 = 390,576,079.20/x
  3. Step 3: Cross multiply
    691,927,322.88x = 954,859,082.94 × 390,576,079.20
  4. Step 4: Simplify right side
    691,927,322.88x = 372,945,116,803,212,800
  5. Step 5: Solve for x
    x = 372,945,116,803,212,800/691,927,322.88
  6. Step 6: Final answer
    x = 538,994,637.83

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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.