Home / 485,878.17-670,541.91-268,085.77

Finding the Fourth Proportional to 485,878.17, 670,541.91 and 268,085.77

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Solution

The fourth proportional to 485,878.17, 670,541.91 and 268,085.77 is: 369,974.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,878.17 : 670,541.91 = 268,085.77 : x
  2. Step 2: Convert to fraction form
    485,878.17/670,541.91 = 268,085.77/x
  3. Step 3: Cross multiply
    485,878.17x = 670,541.91 × 268,085.77
  4. Step 4: Simplify right side
    485,878.17x = 179,762,742,919.19
  5. Step 5: Solve for x
    x = 179,762,742,919.19/485,878.17
  6. Step 6: Final answer
    x = 369,974.94

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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.