Home / 5,280,278.90-7,920,351.45-1,686,000.26

Finding the Fourth Proportional to 5,280,278.90, 7,920,351.45 and 1,686,000.26

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Solution

The fourth proportional to 5,280,278.90, 7,920,351.45 and 1,686,000.26 is: 2,528,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,278.90 : 7,920,351.45 = 1,686,000.26 : x
  2. Step 2: Convert to fraction form
    5,280,278.90/7,920,351.45 = 1,686,000.26/x
  3. Step 3: Cross multiply
    5,280,278.90x = 7,920,351.45 × 1,686,000.26
  4. Step 4: Simplify right side
    5,280,278.90x = 13,353,714,603,991.38
  5. Step 5: Solve for x
    x = 13,353,714,603,991.38/5,280,278.90
  6. Step 6: Final answer
    x = 2,528,979.03

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1.5x scale

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.