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Finding the Fourth Proportional to 630,290.51, 869,806.46 and 343,811.87

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Solution

The fourth proportional to 630,290.51, 869,806.46 and 343,811.87 is: 474,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,290.51 : 869,806.46 = 343,811.87 : x
  2. Step 2: Convert to fraction form
    630,290.51/869,806.46 = 343,811.87/x
  3. Step 3: Cross multiply
    630,290.51x = 869,806.46 × 343,811.87
  4. Step 4: Simplify right side
    630,290.51x = 299,049,785,550.68
  5. Step 5: Solve for x
    x = 299,049,785,550.68/630,290.51
  6. Step 6: Final answer
    x = 474,463.41

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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.