Home / 931,418.76-1,395,959.31-398,312.94

Finding the Fourth Proportional to 931,418.76, 1,395,959.31 and 398,312.94

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Solution

The fourth proportional to 931,418.76, 1,395,959.31 and 398,312.94 is: 596,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,418.76 : 1,395,959.31 = 398,312.94 : x
  2. Step 2: Convert to fraction form
    931,418.76/1,395,959.31 = 398,312.94/x
  3. Step 3: Cross multiply
    931,418.76x = 1,395,959.31 × 398,312.94
  4. Step 4: Simplify right side
    931,418.76x = 556,028,656,886.47
  5. Step 5: Solve for x
    x = 556,028,656,886.47/931,418.76
  6. Step 6: Final answer
    x = 596,969.57

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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.