Home / 678,077.04-935,803.76-372,205.23

Finding the Fourth Proportional to 678,077.04, 935,803.76 and 372,205.23

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Solution

The fourth proportional to 678,077.04, 935,803.76 and 372,205.23 is: 513,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,077.04 : 935,803.76 = 372,205.23 : x
  2. Step 2: Convert to fraction form
    678,077.04/935,803.76 = 372,205.23/x
  3. Step 3: Cross multiply
    678,077.04x = 935,803.76 × 372,205.23
  4. Step 4: Simplify right side
    678,077.04x = 348,311,048,355.38
  5. Step 5: Solve for x
    x = 348,311,048,355.38/678,077.04
  6. Step 6: Final answer
    x = 513,674.74

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Double scale
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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.