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Finding the Fourth Proportional to 518,939.52, 716,140.80 and 304,085.76

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Solution

The fourth proportional to 518,939.52, 716,140.80 and 304,085.76 is: 419,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,939.52 : 716,140.80 = 304,085.76 : x
  2. Step 2: Convert to fraction form
    518,939.52/716,140.80 = 304,085.76/x
  3. Step 3: Cross multiply
    518,939.52x = 716,140.80 × 304,085.76
  4. Step 4: Simplify right side
    518,939.52x = 217,768,219,435.01
  5. Step 5: Solve for x
    x = 217,768,219,435.01/518,939.52
  6. Step 6: Final answer
    x = 419,640.85

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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.