Home / 839,138.90-1,158,095.30-512,433.90

Finding the Fourth Proportional to 839,138.90, 1,158,095.30 and 512,433.90

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Solution

The fourth proportional to 839,138.90, 1,158,095.30 and 512,433.90 is: 707,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,138.90 : 1,158,095.30 = 512,433.90 : x
  2. Step 2: Convert to fraction form
    839,138.90/1,158,095.30 = 512,433.90/x
  3. Step 3: Cross multiply
    839,138.90x = 1,158,095.30 × 512,433.90
  4. Step 4: Simplify right side
    839,138.90x = 593,447,288,588.50
  5. Step 5: Solve for x
    x = 593,447,288,588.50/839,138.90
  6. Step 6: Final answer
    x = 707,209.85

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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.