Home / 1,078,140.20-1,615,266.30-515,935.40

Finding the Fourth Proportional to 1,078,140.20, 1,615,266.30 and 515,935.40

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Solution

The fourth proportional to 1,078,140.20, 1,615,266.30 and 515,935.40 is: 772,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,140.20 : 1,615,266.30 = 515,935.40 : x
  2. Step 2: Convert to fraction form
    1,078,140.20/1,615,266.30 = 515,935.40/x
  3. Step 3: Cross multiply
    1,078,140.20x = 1,615,266.30 × 515,935.40
  4. Step 4: Simplify right side
    1,078,140.20x = 833,373,064,597.02
  5. Step 5: Solve for x
    x = 833,373,064,597.02/1,078,140.20
  6. Step 6: Final answer
    x = 772,972.81

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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.