Home / 813,431.70-1,220,147.55-603,479.70

Finding the Fourth Proportional to 813,431.70, 1,220,147.55 and 603,479.70

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Solution

The fourth proportional to 813,431.70, 1,220,147.55 and 603,479.70 is: 905,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,431.70 : 1,220,147.55 = 603,479.70 : x
  2. Step 2: Convert to fraction form
    813,431.70/1,220,147.55 = 603,479.70/x
  3. Step 3: Cross multiply
    813,431.70x = 1,220,147.55 × 603,479.70
  4. Step 4: Simplify right side
    813,431.70x = 736,334,277,429.74
  5. Step 5: Solve for x
    x = 736,334,277,429.74/813,431.70
  6. Step 6: Final answer
    x = 905,219.55

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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.