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Finding the Fourth Proportional to 579,641.15, 869,056.73 and 342,861.95

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Solution

The fourth proportional to 579,641.15, 869,056.73 and 342,861.95 is: 514,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,641.15 : 869,056.73 = 342,861.95 : x
  2. Step 2: Convert to fraction form
    579,641.15/869,056.73 = 342,861.95/x
  3. Step 3: Cross multiply
    579,641.15x = 869,056.73 × 342,861.95
  4. Step 4: Simplify right side
    579,641.15x = 297,966,483,394.11
  5. Step 5: Solve for x
    x = 297,966,483,394.11/579,641.15
  6. Step 6: Final answer
    x = 514,053.36

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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.