Home / 909,882.21-1,255,661.49-501,989.40

Finding the Fourth Proportional to 909,882.21, 1,255,661.49 and 501,989.40

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Solution

The fourth proportional to 909,882.21, 1,255,661.49 and 501,989.40 is: 692,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,882.21 : 1,255,661.49 = 501,989.40 : x
  2. Step 2: Convert to fraction form
    909,882.21/1,255,661.49 = 501,989.40/x
  3. Step 3: Cross multiply
    909,882.21x = 1,255,661.49 × 501,989.40
  4. Step 4: Simplify right side
    909,882.21x = 630,328,759,850.67
  5. Step 5: Solve for x
    x = 630,328,759,850.67/909,882.21
  6. Step 6: Final answer
    x = 692,758.63

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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.