Home / 578,638.08-867,640.72-459,460.59

Finding the Fourth Proportional to 578,638.08, 867,640.72 and 459,460.59

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Solution

The fourth proportional to 578,638.08, 867,640.72 and 459,460.59 is: 688,939.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,638.08 : 867,640.72 = 459,460.59 : x
  2. Step 2: Convert to fraction form
    578,638.08/867,640.72 = 459,460.59/x
  3. Step 3: Cross multiply
    578,638.08x = 867,640.72 × 459,460.59
  4. Step 4: Simplify right side
    578,638.08x = 398,646,711,632.37
  5. Step 5: Solve for x
    x = 398,646,711,632.37/578,638.08
  6. Step 6: Final answer
    x = 688,939.65

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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.