Home / 781,280.94-1,078,248.06-475,379.58

Finding the Fourth Proportional to 781,280.94, 1,078,248.06 and 475,379.58

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Solution

The fourth proportional to 781,280.94, 1,078,248.06 and 475,379.58 is: 656,072.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,280.94 : 1,078,248.06 = 475,379.58 : x
  2. Step 2: Convert to fraction form
    781,280.94/1,078,248.06 = 475,379.58/x
  3. Step 3: Cross multiply
    781,280.94x = 1,078,248.06 × 475,379.58
  4. Step 4: Simplify right side
    781,280.94x = 512,577,109,898.62
  5. Step 5: Solve for x
    x = 512,577,109,898.62/781,280.94
  6. Step 6: Final answer
    x = 656,072.72

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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.