Home / 886,939.70-1,330,409.55-389,275.70

Finding the Fourth Proportional to 886,939.70, 1,330,409.55 and 389,275.70

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Solution

The fourth proportional to 886,939.70, 1,330,409.55 and 389,275.70 is: 583,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,939.70 : 1,330,409.55 = 389,275.70 : x
  2. Step 2: Convert to fraction form
    886,939.70/1,330,409.55 = 389,275.70/x
  3. Step 3: Cross multiply
    886,939.70x = 1,330,409.55 × 389,275.70
  4. Step 4: Simplify right side
    886,939.70x = 517,896,108,862.94
  5. Step 5: Solve for x
    x = 517,896,108,862.94/886,939.70
  6. Step 6: Final answer
    x = 583,913.55

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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.