Home / 719,075.70-992,295.44-396,781.60

Finding the Fourth Proportional to 719,075.70, 992,295.44 and 396,781.60

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Solution

The fourth proportional to 719,075.70, 992,295.44 and 396,781.60 is: 547,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,075.70 : 992,295.44 = 396,781.60 : x
  2. Step 2: Convert to fraction form
    719,075.70/992,295.44 = 396,781.60/x
  3. Step 3: Cross multiply
    719,075.70x = 992,295.44 × 396,781.60
  4. Step 4: Simplify right side
    719,075.70x = 393,724,572,355.90
  5. Step 5: Solve for x
    x = 393,724,572,355.90/719,075.70
  6. Step 6: Final answer
    x = 547,542.59

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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.