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Finding the Fourth Proportional to 655,842.74, 905,480.84 and 535,271.60

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Solution

The fourth proportional to 655,842.74, 905,480.84 and 535,271.60 is: 739,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,842.74 : 905,480.84 = 535,271.60 : x
  2. Step 2: Convert to fraction form
    655,842.74/905,480.84 = 535,271.60/x
  3. Step 3: Cross multiply
    655,842.74x = 905,480.84 × 535,271.60
  4. Step 4: Simplify right side
    655,842.74x = 484,678,181,598.03
  5. Step 5: Solve for x
    x = 484,678,181,598.03/655,842.74
  6. Step 6: Final answer
    x = 739,015.86

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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.