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Finding the Fourth Proportional to 587,002.40, 879,466.80 and 520,647.20

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Solution

The fourth proportional to 587,002.40, 879,466.80 and 520,647.20 is: 780,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,002.40 : 879,466.80 = 520,647.20 : x
  2. Step 2: Convert to fraction form
    587,002.40/879,466.80 = 520,647.20/x
  3. Step 3: Cross multiply
    587,002.40x = 879,466.80 × 520,647.20
  4. Step 4: Simplify right side
    587,002.40x = 457,891,926,912.96
  5. Step 5: Solve for x
    x = 457,891,926,912.96/587,002.40
  6. Step 6: Final answer
    x = 780,051.20

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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.