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Finding the Fourth Proportional to 386,329.80, 579,494.70 and 370,583.40

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Solution

The fourth proportional to 386,329.80, 579,494.70 and 370,583.40 is: 555,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,329.80 : 579,494.70 = 370,583.40 : x
  2. Step 2: Convert to fraction form
    386,329.80/579,494.70 = 370,583.40/x
  3. Step 3: Cross multiply
    386,329.80x = 579,494.70 × 370,583.40
  4. Step 4: Simplify right side
    386,329.80x = 214,751,116,207.98
  5. Step 5: Solve for x
    x = 214,751,116,207.98/386,329.80
  6. Step 6: Final answer
    x = 555,875.10

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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.