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Finding the Fourth Proportional to 630,208.32, 869,686.95 and 343,727.52

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Solution

The fourth proportional to 630,208.32, 869,686.95 and 343,727.52 is: 474,343.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,208.32 : 869,686.95 = 343,727.52 : x
  2. Step 2: Convert to fraction form
    630,208.32/869,686.95 = 343,727.52/x
  3. Step 3: Cross multiply
    630,208.32x = 869,686.95 × 343,727.52
  4. Step 4: Simplify right side
    630,208.32x = 298,935,338,499.86
  5. Step 5: Solve for x
    x = 298,935,338,499.86/630,208.32
  6. Step 6: Final answer
    x = 474,343.69

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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.