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Finding the Fourth Proportional to 520,796.25, 718,703.15 and 282,332.25

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Solution

The fourth proportional to 520,796.25, 718,703.15 and 282,332.25 is: 389,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,796.25 : 718,703.15 = 282,332.25 : x
  2. Step 2: Convert to fraction form
    520,796.25/718,703.15 = 282,332.25/x
  3. Step 3: Cross multiply
    520,796.25x = 718,703.15 × 282,332.25
  4. Step 4: Simplify right side
    520,796.25x = 202,913,076,009.93
  5. Step 5: Solve for x
    x = 202,913,076,009.93/520,796.25
  6. Step 6: Final answer
    x = 389,620.85

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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.