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Finding the Fourth Proportional to 922,982.98, 1,384,620.84 and 390,508

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Solution

The fourth proportional to 922,982.98, 1,384,620.84 and 390,508 is: 585,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,982.98 : 1,384,620.84 = 390,508 : x
  2. Step 2: Convert to fraction form
    922,982.98/1,384,620.84 = 390,508/x
  3. Step 3: Cross multiply
    922,982.98x = 1,384,620.84 × 390,508
  4. Step 4: Simplify right side
    922,982.98x = 540,705,514,986.72
  5. Step 5: Solve for x
    x = 540,705,514,986.72/922,982.98
  6. Step 6: Final answer
    x = 585,823.93

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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.