Home / 670,511.40-1,005,767.10-387,076.20

Finding the Fourth Proportional to 670,511.40, 1,005,767.10 and 387,076.20

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Solution

The fourth proportional to 670,511.40, 1,005,767.10 and 387,076.20 is: 580,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,511.40 : 1,005,767.10 = 387,076.20 : x
  2. Step 2: Convert to fraction form
    670,511.40/1,005,767.10 = 387,076.20/x
  3. Step 3: Cross multiply
    670,511.40x = 1,005,767.10 × 387,076.20
  4. Step 4: Simplify right side
    670,511.40x = 389,308,507,153.02
  5. Step 5: Solve for x
    x = 389,308,507,153.02/670,511.40
  6. Step 6: Final answer
    x = 580,614.30

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Similar ratio
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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.