Home / 5,280,278.15-7,920,350.32-1,685,999.51

Finding the Fourth Proportional to 5,280,278.15, 7,920,350.32 and 1,685,999.51

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Solution

The fourth proportional to 5,280,278.15, 7,920,350.32 and 1,685,999.51 is: 2,528,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,278.15 : 7,920,350.32 = 1,685,999.51 : x
  2. Step 2: Convert to fraction form
    5,280,278.15/7,920,350.32 = 1,685,999.51/x
  3. Step 3: Cross multiply
    5,280,278.15x = 7,920,350.32 × 1,685,999.51
  4. Step 4: Simplify right side
    5,280,278.15x = 13,353,706,758,548.34
  5. Step 5: Solve for x
    x = 13,353,706,758,548.34/5,280,278.15
  6. Step 6: Final answer
    x = 2,528,977.90

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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.