Home / 1,231,385.80-1,847,136.30-390,003.40

Finding the Fourth Proportional to 1,231,385.80, 1,847,136.30 and 390,003.40

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Solution

The fourth proportional to 1,231,385.80, 1,847,136.30 and 390,003.40 is: 585,023.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,385.80 : 1,847,136.30 = 390,003.40 : x
  2. Step 2: Convert to fraction form
    1,231,385.80/1,847,136.30 = 390,003.40/x
  3. Step 3: Cross multiply
    1,231,385.80x = 1,847,136.30 × 390,003.40
  4. Step 4: Simplify right side
    1,231,385.80x = 720,389,437,263.42
  5. Step 5: Solve for x
    x = 720,389,437,263.42/1,231,385.80
  6. Step 6: Final answer
    x = 585,023.34

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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.