Home / 439,723.40-659,585.10-385,485.80

Finding the Fourth Proportional to 439,723.40, 659,585.10 and 385,485.80

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Solution

The fourth proportional to 439,723.40, 659,585.10 and 385,485.80 is: 578,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,723.40 : 659,585.10 = 385,485.80 : x
  2. Step 2: Convert to fraction form
    439,723.40/659,585.10 = 385,485.80/x
  3. Step 3: Cross multiply
    439,723.40x = 659,585.10 × 385,485.80
  4. Step 4: Simplify right side
    439,723.40x = 254,260,689,941.58
  5. Step 5: Solve for x
    x = 254,260,689,941.58/439,723.40
  6. Step 6: Final answer
    x = 578,228.70

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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.