Home / 388,941.50-583,412.25-126,285.50

Finding the Fourth Proportional to 388,941.50, 583,412.25 and 126,285.50

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Solution

The fourth proportional to 388,941.50, 583,412.25 and 126,285.50 is: 189,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,941.50 : 583,412.25 = 126,285.50 : x
  2. Step 2: Convert to fraction form
    388,941.50/583,412.25 = 126,285.50/x
  3. Step 3: Cross multiply
    388,941.50x = 583,412.25 × 126,285.50
  4. Step 4: Simplify right side
    388,941.50x = 73,676,507,697.38
  5. Step 5: Solve for x
    x = 73,676,507,697.38/388,941.50
  6. Step 6: Final answer
    x = 189,428.25

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Similar ratio
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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.