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Finding the Fourth Proportional to 528,043.80, 791,547.30 and 261,845.40

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Solution

The fourth proportional to 528,043.80, 791,547.30 and 261,845.40 is: 392,511.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,043.80 : 791,547.30 = 261,845.40 : x
  2. Step 2: Convert to fraction form
    528,043.80/791,547.30 = 261,845.40/x
  3. Step 3: Cross multiply
    528,043.80x = 791,547.30 × 261,845.40
  4. Step 4: Simplify right side
    528,043.80x = 207,263,019,387.42
  5. Step 5: Solve for x
    x = 207,263,019,387.42/528,043.80
  6. Step 6: Final answer
    x = 392,511.04

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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.