Home / 685,620.16-1,028,824.05-535,438.87

Finding the Fourth Proportional to 685,620.16, 1,028,824.05 and 535,438.87

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Solution

The fourth proportional to 685,620.16, 1,028,824.05 and 535,438.87 is: 803,465.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,620.16 : 1,028,824.05 = 535,438.87 : x
  2. Step 2: Convert to fraction form
    685,620.16/1,028,824.05 = 535,438.87/x
  3. Step 3: Cross multiply
    685,620.16x = 1,028,824.05 × 535,438.87
  4. Step 4: Simplify right side
    685,620.16x = 550,872,386,760.82
  5. Step 5: Solve for x
    x = 550,872,386,760.82/685,620.16
  6. Step 6: Final answer
    x = 803,465.85

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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.