Home / 838,143.80-1,156,638.45-456,173.36

Finding the Fourth Proportional to 838,143.80, 1,156,638.45 and 456,173.36

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Solution

The fourth proportional to 838,143.80, 1,156,638.45 and 456,173.36 is: 629,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,143.80 : 1,156,638.45 = 456,173.36 : x
  2. Step 2: Convert to fraction form
    838,143.80/1,156,638.45 = 456,173.36/x
  3. Step 3: Cross multiply
    838,143.80x = 1,156,638.45 × 456,173.36
  4. Step 4: Simplify right side
    838,143.80x = 527,627,648,041.69
  5. Step 5: Solve for x
    x = 527,627,648,041.69/838,143.80
  6. Step 6: Final answer
    x = 629,519.24

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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.