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Finding the Fourth Proportional to 922,996.51, 1,384,641.15 and 390,521.50

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Solution

The fourth proportional to 922,996.51, 1,384,641.15 and 390,521.50 is: 585,844.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,996.51 : 1,384,641.15 = 390,521.50 : x
  2. Step 2: Convert to fraction form
    922,996.51/1,384,641.15 = 390,521.50/x
  3. Step 3: Cross multiply
    922,996.51x = 1,384,641.15 × 390,521.50
  4. Step 4: Simplify right side
    922,996.51x = 540,732,138,859.73
  5. Step 5: Solve for x
    x = 540,732,138,859.73/922,996.51
  6. Step 6: Final answer
    x = 585,844.19

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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.