Home / 868,875.70-1,303,313.55-419,941.30

Finding the Fourth Proportional to 868,875.70, 1,303,313.55 and 419,941.30

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Solution

The fourth proportional to 868,875.70, 1,303,313.55 and 419,941.30 is: 629,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,875.70 : 1,303,313.55 = 419,941.30 : x
  2. Step 2: Convert to fraction form
    868,875.70/1,303,313.55 = 419,941.30/x
  3. Step 3: Cross multiply
    868,875.70x = 1,303,313.55 × 419,941.30
  4. Step 4: Simplify right side
    868,875.70x = 547,315,186,494.62
  5. Step 5: Solve for x
    x = 547,315,186,494.62/868,875.70
  6. Step 6: Final answer
    x = 629,911.95

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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.