Home / 811,783.89-1,120,380.59-467,553.63

Finding the Fourth Proportional to 811,783.89, 1,120,380.59 and 467,553.63

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Solution

The fourth proportional to 811,783.89, 1,120,380.59 and 467,553.63 is: 645,292.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,783.89 : 1,120,380.59 = 467,553.63 : x
  2. Step 2: Convert to fraction form
    811,783.89/1,120,380.59 = 467,553.63/x
  3. Step 3: Cross multiply
    811,783.89x = 1,120,380.59 × 467,553.63
  4. Step 4: Simplify right side
    811,783.89x = 523,838,017,206.35
  5. Step 5: Solve for x
    x = 523,838,017,206.35/811,783.89
  6. Step 6: Final answer
    x = 645,292.45

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Double scale
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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.