Home / 578,748.40-798,664.10-320,624.80

Finding the Fourth Proportional to 578,748.40, 798,664.10 and 320,624.80

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Solution

The fourth proportional to 578,748.40, 798,664.10 and 320,624.80 is: 442,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,748.40 : 798,664.10 = 320,624.80 : x
  2. Step 2: Convert to fraction form
    578,748.40/798,664.10 = 320,624.80/x
  3. Step 3: Cross multiply
    578,748.40x = 798,664.10 × 320,624.80
  4. Step 4: Simplify right side
    578,748.40x = 256,071,517,329.68
  5. Step 5: Solve for x
    x = 256,071,517,329.68/578,748.40
  6. Step 6: Final answer
    x = 442,457.41

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Double scale
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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.