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Finding the Fourth Proportional to 655,884.68, 905,020.98 and 369,386.60

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Solution

The fourth proportional to 655,884.68, 905,020.98 and 369,386.60 is: 509,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,884.68 : 905,020.98 = 369,386.60 : x
  2. Step 2: Convert to fraction form
    655,884.68/905,020.98 = 369,386.60/x
  3. Step 3: Cross multiply
    655,884.68x = 905,020.98 × 369,386.60
  4. Step 4: Simplify right side
    655,884.68x = 334,302,622,730.87
  5. Step 5: Solve for x
    x = 334,302,622,730.87/655,884.68
  6. Step 6: Final answer
    x = 509,697.26

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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.