Home / 1,319,128.76-1,817,909.77-1,057,186.54

Finding the Fourth Proportional to 1,319,128.76, 1,817,909.77 and 1,057,186.54

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Solution

The fourth proportional to 1,319,128.76, 1,817,909.77 and 1,057,186.54 is: 1,456,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,128.76 : 1,817,909.77 = 1,057,186.54 : x
  2. Step 2: Convert to fraction form
    1,319,128.76/1,817,909.77 = 1,057,186.54/x
  3. Step 3: Cross multiply
    1,319,128.76x = 1,817,909.77 × 1,057,186.54
  4. Step 4: Simplify right side
    1,319,128.76x = 1,921,869,739,778.50
  5. Step 5: Solve for x
    x = 1,921,869,739,778.50/1,319,128.76
  6. Step 6: Final answer
    x = 1,456,923.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.