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Finding the Fourth Proportional to 660,266.40, 987,775.20 and 572,494.80

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Solution

The fourth proportional to 660,266.40, 987,775.20 and 572,494.80 is: 856,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,266.40 : 987,775.20 = 572,494.80 : x
  2. Step 2: Convert to fraction form
    660,266.40/987,775.20 = 572,494.80/x
  3. Step 3: Cross multiply
    660,266.40x = 987,775.20 × 572,494.80
  4. Step 4: Simplify right side
    660,266.40x = 565,496,165,568.96
  5. Step 5: Solve for x
    x = 565,496,165,568.96/660,266.40
  6. Step 6: Final answer
    x = 856,466.67

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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.