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Finding the Fourth Proportional to 477,875.37, 716,411.30 and 319,620.81

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Solution

The fourth proportional to 477,875.37, 716,411.30 and 319,620.81 is: 479,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,875.37 : 716,411.30 = 319,620.81 : x
  2. Step 2: Convert to fraction form
    477,875.37/716,411.30 = 319,620.81/x
  3. Step 3: Cross multiply
    477,875.37x = 716,411.30 × 319,620.81
  4. Step 4: Simplify right side
    477,875.37x = 228,979,958,401.05
  5. Step 5: Solve for x
    x = 228,979,958,401.05/477,875.37
  6. Step 6: Final answer
    x = 479,162.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.