Home / 784,113.54-1,081,911.72-512,579.28

Finding the Fourth Proportional to 784,113.54, 1,081,911.72 and 512,579.28

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Solution

The fourth proportional to 784,113.54, 1,081,911.72 and 512,579.28 is: 707,251.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,113.54 : 1,081,911.72 = 512,579.28 : x
  2. Step 2: Convert to fraction form
    784,113.54/1,081,911.72 = 512,579.28/x
  3. Step 3: Cross multiply
    784,113.54x = 1,081,911.72 × 512,579.28
  4. Step 4: Simplify right side
    784,113.54x = 554,565,530,461.16
  5. Step 5: Solve for x
    x = 554,565,530,461.16/784,113.54
  6. Step 6: Final answer
    x = 707,251.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.