Home / 811,897.48-1,120,420.68-449,346.34

Finding the Fourth Proportional to 811,897.48, 1,120,420.68 and 449,346.34

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Solution

The fourth proportional to 811,897.48, 1,120,420.68 and 449,346.34 is: 620,099.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,897.48 : 1,120,420.68 = 449,346.34 : x
  2. Step 2: Convert to fraction form
    811,897.48/1,120,420.68 = 449,346.34/x
  3. Step 3: Cross multiply
    811,897.48x = 1,120,420.68 × 449,346.34
  4. Step 4: Simplify right side
    811,897.48x = 503,456,931,818.31
  5. Step 5: Solve for x
    x = 503,456,931,818.31/811,897.48
  6. Step 6: Final answer
    x = 620,099.14

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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.