Home / 931,421.76-1,395,963.78-398,315.94

Finding the Fourth Proportional to 931,421.76, 1,395,963.78 and 398,315.94

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Solution

The fourth proportional to 931,421.76, 1,395,963.78 and 398,315.94 is: 596,974.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,421.76 : 1,395,963.78 = 398,315.94 : x
  2. Step 2: Convert to fraction form
    931,421.76/1,395,963.78 = 398,315.94/x
  3. Step 3: Cross multiply
    931,421.76x = 1,395,963.78 × 398,315.94
  4. Step 4: Simplify right side
    931,421.76x = 556,034,625,236.65
  5. Step 5: Solve for x
    x = 556,034,625,236.65/931,421.76
  6. Step 6: Final answer
    x = 596,974.06

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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.