Home / 1,030,538.40-1,422,143.60-628,130.40

Finding the Fourth Proportional to 1,030,538.40, 1,422,143.60 and 628,130.40

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Solution

The fourth proportional to 1,030,538.40, 1,422,143.60 and 628,130.40 is: 866,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,538.40 : 1,422,143.60 = 628,130.40 : x
  2. Step 2: Convert to fraction form
    1,030,538.40/1,422,143.60 = 628,130.40/x
  3. Step 3: Cross multiply
    1,030,538.40x = 1,422,143.60 × 628,130.40
  4. Step 4: Simplify right side
    1,030,538.40x = 893,291,628,325.44
  5. Step 5: Solve for x
    x = 893,291,628,325.44/1,030,538.40
  6. Step 6: Final answer
    x = 866,820.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.