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Finding the Fourth Proportional to 569,898.05, 786,390.80 and 328,259.21

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Solution

The fourth proportional to 569,898.05, 786,390.80 and 328,259.21 is: 452,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,898.05 : 786,390.80 = 328,259.21 : x
  2. Step 2: Convert to fraction form
    569,898.05/786,390.80 = 328,259.21/x
  3. Step 3: Cross multiply
    569,898.05x = 786,390.80 × 328,259.21
  4. Step 4: Simplify right side
    569,898.05x = 258,140,021,117.97
  5. Step 5: Solve for x
    x = 258,140,021,117.97/569,898.05
  6. Step 6: Final answer
    x = 452,958.25

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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.