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Finding the Fourth Proportional to 608,890.06, 840,681.75 and 379,539.10

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Solution

The fourth proportional to 608,890.06, 840,681.75 and 379,539.10 is: 524,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,890.06 : 840,681.75 = 379,539.10 : x
  2. Step 2: Convert to fraction form
    608,890.06/840,681.75 = 379,539.10/x
  3. Step 3: Cross multiply
    608,890.06x = 840,681.75 × 379,539.10
  4. Step 4: Simplify right side
    608,890.06x = 319,071,594,781.43
  5. Step 5: Solve for x
    x = 319,071,594,781.43/608,890.06
  6. Step 6: Final answer
    x = 524,021.68

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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.