Home / 1,690,487.03-2,535,878.19-428,314.66

Finding the Fourth Proportional to 1,690,487.03, 2,535,878.19 and 428,314.66

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Solution

The fourth proportional to 1,690,487.03, 2,535,878.19 and 428,314.66 is: 642,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,487.03 : 2,535,878.19 = 428,314.66 : x
  2. Step 2: Convert to fraction form
    1,690,487.03/2,535,878.19 = 428,314.66/x
  3. Step 3: Cross multiply
    1,690,487.03x = 2,535,878.19 × 428,314.66
  4. Step 4: Simplify right side
    1,690,487.03x = 1,086,153,804,751.27
  5. Step 5: Solve for x
    x = 1,086,153,804,751.27/1,690,487.03
  6. Step 6: Final answer
    x = 642,509.40

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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.