Home / 639,948.43-883,123.59-349,560.19

Finding the Fourth Proportional to 639,948.43, 883,123.59 and 349,560.19

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Solution

The fourth proportional to 639,948.43, 883,123.59 and 349,560.19 is: 482,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,948.43 : 883,123.59 = 349,560.19 : x
  2. Step 2: Convert to fraction form
    639,948.43/883,123.59 = 349,560.19/x
  3. Step 3: Cross multiply
    639,948.43x = 883,123.59 × 349,560.19
  4. Step 4: Simplify right side
    639,948.43x = 308,704,849,913.88
  5. Step 5: Solve for x
    x = 308,704,849,913.88/639,948.43
  6. Step 6: Final answer
    x = 482,390.20

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Half scale
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Double scale
Find fourth proportional to 639,949.43, 883,124.97 and 349,561.19
Similar ratio
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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.