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Finding the Fourth Proportional to 519,458.85, 716,731.47 and 315,504.09

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Solution

The fourth proportional to 519,458.85, 716,731.47 and 315,504.09 is: 435,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,458.85 : 716,731.47 = 315,504.09 : x
  2. Step 2: Convert to fraction form
    519,458.85/716,731.47 = 315,504.09/x
  3. Step 3: Cross multiply
    519,458.85x = 716,731.47 × 315,504.09
  4. Step 4: Simplify right side
    519,458.85x = 226,131,710,216.71
  5. Step 5: Solve for x
    x = 226,131,710,216.71/519,458.85
  6. Step 6: Final answer
    x = 435,321.70

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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.