Home / 1,389,897.96-1,917,070.42-1,275,545.88

Finding the Fourth Proportional to 1,389,897.96, 1,917,070.42 and 1,275,545.88

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Solution

The fourth proportional to 1,389,897.96, 1,917,070.42 and 1,275,545.88 is: 1,759,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,897.96 : 1,917,070.42 = 1,275,545.88 : x
  2. Step 2: Convert to fraction form
    1,389,897.96/1,917,070.42 = 1,275,545.88/x
  3. Step 3: Cross multiply
    1,389,897.96x = 1,917,070.42 × 1,275,545.88
  4. Step 4: Simplify right side
    1,389,897.96x = 2,445,311,275,900.87
  5. Step 5: Solve for x
    x = 2,445,311,275,900.87/1,389,897.96
  6. Step 6: Final answer
    x = 1,759,345.90

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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.