Home / 909,090.70-1,254,564.15-501,209.73

Finding the Fourth Proportional to 909,090.70, 1,254,564.15 and 501,209.73

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Solution

The fourth proportional to 909,090.70, 1,254,564.15 and 501,209.73 is: 691,679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,090.70 : 1,254,564.15 = 501,209.73 : x
  2. Step 2: Convert to fraction form
    909,090.70/1,254,564.15 = 501,209.73/x
  3. Step 3: Cross multiply
    909,090.70x = 1,254,564.15 × 501,209.73
  4. Step 4: Simplify right side
    909,090.70x = 628,799,758,889.18
  5. Step 5: Solve for x
    x = 628,799,758,889.18/909,090.70
  6. Step 6: Final answer
    x = 691,679.89

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1.5x scale

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.