Home / 638,729,037.30-956,301,965.55-620,813,133.30

Finding the Fourth Proportional to 638,729,037.30, 956,301,965.55 and 620,813,133.30

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Solution

The fourth proportional to 638,729,037.30, 956,301,965.55 and 620,813,133.30 is: 929,478,362.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,729,037.30 : 956,301,965.55 = 620,813,133.30 : x
  2. Step 2: Convert to fraction form
    638,729,037.30/956,301,965.55 = 620,813,133.30/x
  3. Step 3: Cross multiply
    638,729,037.30x = 956,301,965.55 × 620,813,133.30
  4. Step 4: Simplify right side
    638,729,037.30x = 593,684,819,614,044,032
  5. Step 5: Solve for x
    x = 593,684,819,614,044,032/638,729,037.30
  6. Step 6: Final answer
    x = 929,478,362.41

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.