Home / 485,980.04-670,290.26-356,877.80

Finding the Fourth Proportional to 485,980.04, 670,290.26 and 356,877.80

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Solution

The fourth proportional to 485,980.04, 670,290.26 and 356,877.80 is: 492,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,980.04 : 670,290.26 = 356,877.80 : x
  2. Step 2: Convert to fraction form
    485,980.04/670,290.26 = 356,877.80/x
  3. Step 3: Cross multiply
    485,980.04x = 670,290.26 × 356,877.80
  4. Step 4: Simplify right side
    485,980.04x = 239,211,713,350.23
  5. Step 5: Solve for x
    x = 239,211,713,350.23/485,980.04
  6. Step 6: Final answer
    x = 492,225.39

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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.