Home / 1,289,018.34-1,778,857.47-708,253.61

Finding the Fourth Proportional to 1,289,018.34, 1,778,857.47 and 708,253.61

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Solution

The fourth proportional to 1,289,018.34, 1,778,857.47 and 708,253.61 is: 977,396.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,018.34 : 1,778,857.47 = 708,253.61 : x
  2. Step 2: Convert to fraction form
    1,289,018.34/1,778,857.47 = 708,253.61/x
  3. Step 3: Cross multiply
    1,289,018.34x = 1,778,857.47 × 708,253.61
  4. Step 4: Simplify right side
    1,289,018.34x = 1,259,882,215,908.68
  5. Step 5: Solve for x
    x = 1,259,882,215,908.68/1,289,018.34
  6. Step 6: Final answer
    x = 977,396.66

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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.