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Finding the Fourth Proportional to 519,265.10, 778,897.65 and 319,810.70

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Solution

The fourth proportional to 519,265.10, 778,897.65 and 319,810.70 is: 479,716.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,265.10 : 778,897.65 = 319,810.70 : x
  2. Step 2: Convert to fraction form
    519,265.10/778,897.65 = 319,810.70/x
  3. Step 3: Cross multiply
    519,265.10x = 778,897.65 × 319,810.70
  4. Step 4: Simplify right side
    519,265.10x = 249,099,802,674.86
  5. Step 5: Solve for x
    x = 249,099,802,674.86/519,265.10
  6. Step 6: Final answer
    x = 479,716.05

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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.