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Finding the Fourth Proportional to 390,594.29, 585,891.43 and 370,648.85

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Solution

The fourth proportional to 390,594.29, 585,891.43 and 370,648.85 is: 555,973.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,594.29 : 585,891.43 = 370,648.85 : x
  2. Step 2: Convert to fraction form
    390,594.29/585,891.43 = 370,648.85/x
  3. Step 3: Cross multiply
    390,594.29x = 585,891.43 × 370,648.85
  4. Step 4: Simplify right side
    390,594.29x = 217,159,980,898.28
  5. Step 5: Solve for x
    x = 217,159,980,898.28/390,594.29
  6. Step 6: Final answer
    x = 555,973.27

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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.