Home / 403,353,422.40-605,030,133.60-265,603,915.20

Finding the Fourth Proportional to 403,353,422.40, 605,030,133.60 and 265,603,915.20

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Solution

The fourth proportional to 403,353,422.40, 605,030,133.60 and 265,603,915.20 is: 398,405,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,353,422.40 : 605,030,133.60 = 265,603,915.20 : x
  2. Step 2: Convert to fraction form
    403,353,422.40/605,030,133.60 = 265,603,915.20/x
  3. Step 3: Cross multiply
    403,353,422.40x = 605,030,133.60 × 265,603,915.20
  4. Step 4: Simplify right side
    403,353,422.40x = 160,698,372,298,139,072
  5. Step 5: Solve for x
    x = 160,698,372,298,139,072/403,353,422.40
  6. Step 6: Final answer
    x = 398,405,872.80

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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.