Home / 620,371.20-931,431.60-384,175.20

Finding the Fourth Proportional to 620,371.20, 931,431.60 and 384,175.20

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Solution

The fourth proportional to 620,371.20, 931,431.60 and 384,175.20 is: 576,804.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,371.20 : 931,431.60 = 384,175.20 : x
  2. Step 2: Convert to fraction form
    620,371.20/931,431.60 = 384,175.20/x
  3. Step 3: Cross multiply
    620,371.20x = 931,431.60 × 384,175.20
  4. Step 4: Simplify right side
    620,371.20x = 357,832,921,216.32
  5. Step 5: Solve for x
    x = 357,832,921,216.32/620,371.20
  6. Step 6: Final answer
    x = 576,804.53

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1.5x scale

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.