Home / 802,320.90-1,107,057.69-515,775.30

Finding the Fourth Proportional to 802,320.90, 1,107,057.69 and 515,775.30

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Solution

The fourth proportional to 802,320.90, 1,107,057.69 and 515,775.30 is: 711,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,320.90 : 1,107,057.69 = 515,775.30 : x
  2. Step 2: Convert to fraction form
    802,320.90/1,107,057.69 = 515,775.30/x
  3. Step 3: Cross multiply
    802,320.90x = 1,107,057.69 × 515,775.30
  4. Step 4: Simplify right side
    802,320.90x = 570,993,012,177.06
  5. Step 5: Solve for x
    x = 570,993,012,177.06/802,320.90
  6. Step 6: Final answer
    x = 711,676.60

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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.