Home / 578,819.06-798,705.43-320,631.40

Finding the Fourth Proportional to 578,819.06, 798,705.43 and 320,631.40

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Solution

The fourth proportional to 578,819.06, 798,705.43 and 320,631.40 is: 442,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,819.06 : 798,705.43 = 320,631.40 : x
  2. Step 2: Convert to fraction form
    578,819.06/798,705.43 = 320,631.40/x
  3. Step 3: Cross multiply
    578,819.06x = 798,705.43 × 320,631.40
  4. Step 4: Simplify right side
    578,819.06x = 256,090,040,208.50
  5. Step 5: Solve for x
    x = 256,090,040,208.50/578,819.06
  6. Step 6: Final answer
    x = 442,435.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.