Home / 5,280,485.90-7,920,728.85-1,291,397.90

Finding the Fourth Proportional to 5,280,485.90, 7,920,728.85 and 1,291,397.90

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Solution

The fourth proportional to 5,280,485.90, 7,920,728.85 and 1,291,397.90 is: 1,937,096.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,485.90 : 7,920,728.85 = 1,291,397.90 : x
  2. Step 2: Convert to fraction form
    5,280,485.90/7,920,728.85 = 1,291,397.90/x
  3. Step 3: Cross multiply
    5,280,485.90x = 7,920,728.85 × 1,291,397.90
  4. Step 4: Simplify right side
    5,280,485.90x = 10,228,812,603,359.41
  5. Step 5: Solve for x
    x = 10,228,812,603,359.41/5,280,485.90
  6. Step 6: Final answer
    x = 1,937,096.85

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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.