Home / 683,839.80-1,026,602.10-431,119.80

Finding the Fourth Proportional to 683,839.80, 1,026,602.10 and 431,119.80

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Solution

The fourth proportional to 683,839.80, 1,026,602.10 and 431,119.80 is: 647,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,839.80 : 1,026,602.10 = 431,119.80 : x
  2. Step 2: Convert to fraction form
    683,839.80/1,026,602.10 = 431,119.80/x
  3. Step 3: Cross multiply
    683,839.80x = 1,026,602.10 × 431,119.80
  4. Step 4: Simplify right side
    683,839.80x = 442,588,492,031.58
  5. Step 5: Solve for x
    x = 442,588,492,031.58/683,839.80
  6. Step 6: Final answer
    x = 647,210.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.