Home / 2,772,085.90-4,158,128.86-1,921,780.30

Finding the Fourth Proportional to 2,772,085.90, 4,158,128.86 and 1,921,780.30

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Solution

The fourth proportional to 2,772,085.90, 4,158,128.86 and 1,921,780.30 is: 2,882,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772,085.90 : 4,158,128.86 = 1,921,780.30 : x
  2. Step 2: Convert to fraction form
    2,772,085.90/4,158,128.86 = 1,921,780.30/x
  3. Step 3: Cross multiply
    2,772,085.90x = 4,158,128.86 × 1,921,780.30
  4. Step 4: Simplify right side
    2,772,085.90x = 7,991,010,128,009.46
  5. Step 5: Solve for x
    x = 7,991,010,128,009.46/2,772,085.90
  6. Step 6: Final answer
    x = 2,882,670.46

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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.