Home / 912,855.21-1,369,314.05-313,811.25

Finding the Fourth Proportional to 912,855.21, 1,369,314.05 and 313,811.25

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Solution

The fourth proportional to 912,855.21, 1,369,314.05 and 313,811.25 is: 470,727.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,855.21 : 1,369,314.05 = 313,811.25 : x
  2. Step 2: Convert to fraction form
    912,855.21/1,369,314.05 = 313,811.25/x
  3. Step 3: Cross multiply
    912,855.21x = 1,369,314.05 × 313,811.25
  4. Step 4: Simplify right side
    912,855.21x = 429,706,152,104.01
  5. Step 5: Solve for x
    x = 429,706,152,104.01/912,855.21
  6. Step 6: Final answer
    x = 470,727.61

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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.