Home / 485,979.04-670,288.88-356,876.80

Finding the Fourth Proportional to 485,979.04, 670,288.88 and 356,876.80

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Solution

The fourth proportional to 485,979.04, 670,288.88 and 356,876.80 is: 492,224.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,979.04 : 670,288.88 = 356,876.80 : x
  2. Step 2: Convert to fraction form
    485,979.04/670,288.88 = 356,876.80/x
  3. Step 3: Cross multiply
    485,979.04x = 670,288.88 × 356,876.80
  4. Step 4: Simplify right side
    485,979.04x = 239,210,550,569.98
  5. Step 5: Solve for x
    x = 239,210,550,569.98/485,979.04
  6. Step 6: Final answer
    x = 492,224.01

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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.