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Finding the Fourth Proportional to 925,784.80, 1,385,566.80 and 645,848.80

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Solution

The fourth proportional to 925,784.80, 1,385,566.80 and 645,848.80 is: 966,603.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,784.80 : 1,385,566.80 = 645,848.80 : x
  2. Step 2: Convert to fraction form
    925,784.80/1,385,566.80 = 645,848.80/x
  3. Step 3: Cross multiply
    925,784.80x = 1,385,566.80 × 645,848.80
  4. Step 4: Simplify right side
    925,784.80x = 894,866,655,099.84
  5. Step 5: Solve for x
    x = 894,866,655,099.84/925,784.80
  6. Step 6: Final answer
    x = 966,603.31

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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.