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Finding the Fourth Proportional to 710,838.86, 980,957.64 and 388,550.22

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Solution

The fourth proportional to 710,838.86, 980,957.64 and 388,550.22 is: 536,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,838.86 : 980,957.64 = 388,550.22 : x
  2. Step 2: Convert to fraction form
    710,838.86/980,957.64 = 388,550.22/x
  3. Step 3: Cross multiply
    710,838.86x = 980,957.64 × 388,550.22
  4. Step 4: Simplify right side
    710,838.86x = 381,151,306,832.68
  5. Step 5: Solve for x
    x = 381,151,306,832.68/710,838.86
  6. Step 6: Final answer
    x = 536,199.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.