Home / 403,358,643.40-605,037,965.10-394,400,691.40

Finding the Fourth Proportional to 403,358,643.40, 605,037,965.10 and 394,400,691.40

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Solution

The fourth proportional to 403,358,643.40, 605,037,965.10 and 394,400,691.40 is: 591,601,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,358,643.40 : 605,037,965.10 = 394,400,691.40 : x
  2. Step 2: Convert to fraction form
    403,358,643.40/605,037,965.10 = 394,400,691.40/x
  3. Step 3: Cross multiply
    403,358,643.40x = 605,037,965.10 × 394,400,691.40
  4. Step 4: Simplify right side
    403,358,643.40x = 238,627,391,758,689,056
  5. Step 5: Solve for x
    x = 238,627,391,758,689,056/403,358,643.40
  6. Step 6: Final answer
    x = 591,601,037.10

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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.