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Finding the Fourth Proportional to 530,955.90, 796,550.42 and 390,288.06

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Solution

The fourth proportional to 530,955.90, 796,550.42 and 390,288.06 is: 585,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,955.90 : 796,550.42 = 390,288.06 : x
  2. Step 2: Convert to fraction form
    530,955.90/796,550.42 = 390,288.06/x
  3. Step 3: Cross multiply
    530,955.90x = 796,550.42 × 390,288.06
  4. Step 4: Simplify right side
    530,955.90x = 310,884,118,113.99
  5. Step 5: Solve for x
    x = 310,884,118,113.99/530,955.90
  6. Step 6: Final answer
    x = 585,517.78

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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.