Home / 1,128,739.36-1,693,160.88-287,298.40

Finding the Fourth Proportional to 1,128,739.36, 1,693,160.88 and 287,298.40

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Solution

The fourth proportional to 1,128,739.36, 1,693,160.88 and 287,298.40 is: 430,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,739.36 : 1,693,160.88 = 287,298.40 : x
  2. Step 2: Convert to fraction form
    1,128,739.36/1,693,160.88 = 287,298.40/x
  3. Step 3: Cross multiply
    1,128,739.36x = 1,693,160.88 × 287,298.40
  4. Step 4: Simplify right side
    1,128,739.36x = 486,442,411,766.59
  5. Step 5: Solve for x
    x = 486,442,411,766.59/1,128,739.36
  6. Step 6: Final answer
    x = 430,960.79

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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.