Home / 786,088.37-1,179,381.78-280,638.50

Finding the Fourth Proportional to 786,088.37, 1,179,381.78 and 280,638.50

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Solution

The fourth proportional to 786,088.37, 1,179,381.78 and 280,638.50 is: 421,046.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,088.37 : 1,179,381.78 = 280,638.50 : x
  2. Step 2: Convert to fraction form
    786,088.37/1,179,381.78 = 280,638.50/x
  3. Step 3: Cross multiply
    786,088.37x = 1,179,381.78 × 280,638.50
  4. Step 4: Simplify right side
    786,088.37x = 330,979,927,769.62
  5. Step 5: Solve for x
    x = 330,979,927,769.62/786,088.37
  6. Step 6: Final answer
    x = 421,046.72

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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.