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Finding the Fourth Proportional to 477,872.96, 716,407.68 and 319,618.40

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Solution

The fourth proportional to 477,872.96, 716,407.68 and 319,618.40 is: 479,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,872.96 : 716,407.68 = 319,618.40 : x
  2. Step 2: Convert to fraction form
    477,872.96/716,407.68 = 319,618.40/x
  3. Step 3: Cross multiply
    477,872.96x = 716,407.68 × 319,618.40
  4. Step 4: Simplify right side
    477,872.96x = 228,977,076,429.31
  5. Step 5: Solve for x
    x = 228,977,076,429.31/477,872.96
  6. Step 6: Final answer
    x = 479,158.89

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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.