Home / 497,085.10-685,935.37-279,276.76

Finding the Fourth Proportional to 497,085.10, 685,935.37 and 279,276.76

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Solution

The fourth proportional to 497,085.10, 685,935.37 and 279,276.76 is: 385,378.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,085.10 : 685,935.37 = 279,276.76 : x
  2. Step 2: Convert to fraction form
    497,085.10/685,935.37 = 279,276.76/x
  3. Step 3: Cross multiply
    497,085.10x = 685,935.37 × 279,276.76
  4. Step 4: Simplify right side
    497,085.10x = 191,565,804,273.32
  5. Step 5: Solve for x
    x = 191,565,804,273.32/497,085.10
  6. Step 6: Final answer
    x = 385,378.29

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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.