Home / 1,069,511.40-1,605,174.30-438,877.80

Finding the Fourth Proportional to 1,069,511.40, 1,605,174.30 and 438,877.80

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Solution

The fourth proportional to 1,069,511.40, 1,605,174.30 and 438,877.80 is: 658,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,511.40 : 1,605,174.30 = 438,877.80 : x
  2. Step 2: Convert to fraction form
    1,069,511.40/1,605,174.30 = 438,877.80/x
  3. Step 3: Cross multiply
    1,069,511.40x = 1,605,174.30 × 438,877.80
  4. Step 4: Simplify right side
    1,069,511.40x = 704,475,365,400.54
  5. Step 5: Solve for x
    x = 704,475,365,400.54/1,069,511.40
  6. Step 6: Final answer
    x = 658,688.97

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Double scale
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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.