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Finding the Fourth Proportional to 630,313.77, 869,831.95 and 343,833.86

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Solution

The fourth proportional to 630,313.77, 869,831.95 and 343,833.86 is: 474,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,313.77 : 869,831.95 = 343,833.86 : x
  2. Step 2: Convert to fraction form
    630,313.77/869,831.95 = 343,833.86/x
  3. Step 3: Cross multiply
    630,313.77x = 869,831.95 × 343,833.86
  4. Step 4: Simplify right side
    630,313.77x = 299,077,673,986.71
  5. Step 5: Solve for x
    x = 299,077,673,986.71/630,313.77
  6. Step 6: Final answer
    x = 474,490.15

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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.