Home / 926,378.40-1,388,604.20-358,149.78

Finding the Fourth Proportional to 926,378.40, 1,388,604.20 and 358,149.78

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Solution

The fourth proportional to 926,378.40, 1,388,604.20 and 358,149.78 is: 536,852.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,378.40 : 1,388,604.20 = 358,149.78 : x
  2. Step 2: Convert to fraction form
    926,378.40/1,388,604.20 = 358,149.78/x
  3. Step 3: Cross multiply
    926,378.40x = 1,388,604.20 × 358,149.78
  4. Step 4: Simplify right side
    926,378.40x = 497,328,288,737.08
  5. Step 5: Solve for x
    x = 497,328,288,737.08/926,378.40
  6. Step 6: Final answer
    x = 536,852.21

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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.