Home / 1,078,125.20-1,615,243.80-515,920.40

Finding the Fourth Proportional to 1,078,125.20, 1,615,243.80 and 515,920.40

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Solution

The fourth proportional to 1,078,125.20, 1,615,243.80 and 515,920.40 is: 772,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,125.20 : 1,615,243.80 = 515,920.40 : x
  2. Step 2: Convert to fraction form
    1,078,125.20/1,615,243.80 = 515,920.40/x
  3. Step 3: Cross multiply
    1,078,125.20x = 1,615,243.80 × 515,920.40
  4. Step 4: Simplify right side
    1,078,125.20x = 833,337,227,393.52
  5. Step 5: Solve for x
    x = 833,337,227,393.52/1,078,125.20
  6. Step 6: Final answer
    x = 772,950.33

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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.