Home / 419,085.28-578,596.08-288,485.92

Finding the Fourth Proportional to 419,085.28, 578,596.08 and 288,485.92

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Solution

The fourth proportional to 419,085.28, 578,596.08 and 288,485.92 is: 398,288.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,085.28 : 578,596.08 = 288,485.92 : x
  2. Step 2: Convert to fraction form
    419,085.28/578,596.08 = 288,485.92/x
  3. Step 3: Cross multiply
    419,085.28x = 578,596.08 × 288,485.92
  4. Step 4: Simplify right side
    419,085.28x = 166,916,822,447.19
  5. Step 5: Solve for x
    x = 166,916,822,447.19/419,085.28
  6. Step 6: Final answer
    x = 398,288.44

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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.