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Finding the Fourth Proportional to 876,009.98, 1,208,783.98 and 513,350.71

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Solution

The fourth proportional to 876,009.98, 1,208,783.98 and 513,350.71 is: 708,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,009.98 : 1,208,783.98 = 513,350.71 : x
  2. Step 2: Convert to fraction form
    876,009.98/1,208,783.98 = 513,350.71/x
  3. Step 3: Cross multiply
    876,009.98x = 1,208,783.98 × 513,350.71
  4. Step 4: Simplify right side
    876,009.98x = 620,530,114,369.63
  5. Step 5: Solve for x
    x = 620,530,114,369.63/876,009.98
  6. Step 6: Final answer
    x = 708,359.64

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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.