Home / 891,564.89-1,230,255.75-499,119.34

Finding the Fourth Proportional to 891,564.89, 1,230,255.75 and 499,119.34

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Solution

The fourth proportional to 891,564.89, 1,230,255.75 and 499,119.34 is: 688,726.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,564.89 : 1,230,255.75 = 499,119.34 : x
  2. Step 2: Convert to fraction form
    891,564.89/1,230,255.75 = 499,119.34/x
  3. Step 3: Cross multiply
    891,564.89x = 1,230,255.75 × 499,119.34
  4. Step 4: Simplify right side
    891,564.89x = 614,044,433,427.63
  5. Step 5: Solve for x
    x = 614,044,433,427.63/891,564.89
  6. Step 6: Final answer
    x = 688,726.58

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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.