Home / 877,776.78-1,316,530.62-278,660.28

Finding the Fourth Proportional to 877,776.78, 1,316,530.62 and 278,660.28

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Solution

The fourth proportional to 877,776.78, 1,316,530.62 and 278,660.28 is: 417,947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,776.78 : 1,316,530.62 = 278,660.28 : x
  2. Step 2: Convert to fraction form
    877,776.78/1,316,530.62 = 278,660.28/x
  3. Step 3: Cross multiply
    877,776.78x = 1,316,530.62 × 278,660.28
  4. Step 4: Simplify right side
    877,776.78x = 366,864,791,197.77
  5. Step 5: Solve for x
    x = 366,864,791,197.77/877,776.78
  6. Step 6: Final answer
    x = 417,947.71

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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.