Home / 738,123.40-1,107,185.10-644,811.40

Finding the Fourth Proportional to 738,123.40, 1,107,185.10 and 644,811.40

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Solution

The fourth proportional to 738,123.40, 1,107,185.10 and 644,811.40 is: 967,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,123.40 : 1,107,185.10 = 644,811.40 : x
  2. Step 2: Convert to fraction form
    738,123.40/1,107,185.10 = 644,811.40/x
  3. Step 3: Cross multiply
    738,123.40x = 1,107,185.10 × 644,811.40
  4. Step 4: Simplify right side
    738,123.40x = 713,925,574,390.14
  5. Step 5: Solve for x
    x = 713,925,574,390.14/738,123.40
  6. Step 6: Final answer
    x = 967,217.10

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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.