Home / 683,415.40-1,025,123.10-447,485.80

Finding the Fourth Proportional to 683,415.40, 1,025,123.10 and 447,485.80

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Solution

The fourth proportional to 683,415.40, 1,025,123.10 and 447,485.80 is: 671,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,415.40 : 1,025,123.10 = 447,485.80 : x
  2. Step 2: Convert to fraction form
    683,415.40/1,025,123.10 = 447,485.80/x
  3. Step 3: Cross multiply
    683,415.40x = 1,025,123.10 × 447,485.80
  4. Step 4: Simplify right side
    683,415.40x = 458,728,030,501.98
  5. Step 5: Solve for x
    x = 458,728,030,501.98/683,415.40
  6. Step 6: Final answer
    x = 671,228.70

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.