Home / 909,890.37-1,363,728.69-643,727.61

Finding the Fourth Proportional to 909,890.37, 1,363,728.69 and 643,727.61

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Solution

The fourth proportional to 909,890.37, 1,363,728.69 and 643,727.61 is: 964,808.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,890.37 : 1,363,728.69 = 643,727.61 : x
  2. Step 2: Convert to fraction form
    909,890.37/1,363,728.69 = 643,727.61/x
  3. Step 3: Cross multiply
    909,890.37x = 1,363,728.69 × 643,727.61
  4. Step 4: Simplify right side
    909,890.37x = 877,869,810,302.13
  5. Step 5: Solve for x
    x = 877,869,810,302.13/909,890.37
  6. Step 6: Final answer
    x = 964,808.33

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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.