Home / 1,284,409.40-1,926,030.90-485,425.40

Finding the Fourth Proportional to 1,284,409.40, 1,926,030.90 and 485,425.40

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Solution

The fourth proportional to 1,284,409.40, 1,926,030.90 and 485,425.40 is: 727,917.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,409.40 : 1,926,030.90 = 485,425.40 : x
  2. Step 2: Convert to fraction form
    1,284,409.40/1,926,030.90 = 485,425.40/x
  3. Step 3: Cross multiply
    1,284,409.40x = 1,926,030.90 × 485,425.40
  4. Step 4: Simplify right side
    1,284,409.40x = 934,944,320,044.86
  5. Step 5: Solve for x
    x = 934,944,320,044.86/1,284,409.40
  6. Step 6: Final answer
    x = 727,917.69

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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.