Home / 403,358,856.40-605,038,284.60-394,400,904.40

Finding the Fourth Proportional to 403,358,856.40, 605,038,284.60 and 394,400,904.40

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Solution

The fourth proportional to 403,358,856.40, 605,038,284.60 and 394,400,904.40 is: 591,601,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,358,856.40 : 605,038,284.60 = 394,400,904.40 : x
  2. Step 2: Convert to fraction form
    403,358,856.40/605,038,284.60 = 394,400,904.40/x
  3. Step 3: Cross multiply
    403,358,856.40x = 605,038,284.60 × 394,400,904.40
  4. Step 4: Simplify right side
    403,358,856.40x = 238,627,646,642,864,576
  5. Step 5: Solve for x
    x = 238,627,646,642,864,576/403,358,856.40
  6. Step 6: Final answer
    x = 591,601,356.60

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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.