Home / 877,981.28-1,316,067.96-345,286.40

Finding the Fourth Proportional to 877,981.28, 1,316,067.96 and 345,286.40

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Solution

The fourth proportional to 877,981.28, 1,316,067.96 and 345,286.40 is: 517,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,981.28 : 1,316,067.96 = 345,286.40 : x
  2. Step 2: Convert to fraction form
    877,981.28/1,316,067.96 = 345,286.40/x
  3. Step 3: Cross multiply
    877,981.28x = 1,316,067.96 × 345,286.40
  4. Step 4: Simplify right side
    877,981.28x = 454,420,368,063.74
  5. Step 5: Solve for x
    x = 454,420,368,063.74/877,981.28
  6. Step 6: Final answer
    x = 517,574.10

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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.