Home / 868,646.20-1,302,969.30-419,711.80

Finding the Fourth Proportional to 868,646.20, 1,302,969.30 and 419,711.80

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Solution

The fourth proportional to 868,646.20, 1,302,969.30 and 419,711.80 is: 629,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,646.20 : 1,302,969.30 = 419,711.80 : x
  2. Step 2: Convert to fraction form
    868,646.20/1,302,969.30 = 419,711.80/x
  3. Step 3: Cross multiply
    868,646.20x = 1,302,969.30 × 419,711.80
  4. Step 4: Simplify right side
    868,646.20x = 546,871,590,247.74
  5. Step 5: Solve for x
    x = 546,871,590,247.74/868,646.20
  6. Step 6: Final answer
    x = 629,567.70

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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.