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Finding the Fourth Proportional to 710,500.84, 980,462.01 and 388,222

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Solution

The fourth proportional to 710,500.84, 980,462.01 and 388,222 is: 535,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,500.84 : 980,462.01 = 388,222 : x
  2. Step 2: Convert to fraction form
    710,500.84/980,462.01 = 388,222/x
  3. Step 3: Cross multiply
    710,500.84x = 980,462.01 × 388,222
  4. Step 4: Simplify right side
    710,500.84x = 380,636,922,446.22
  5. Step 5: Solve for x
    x = 380,636,922,446.22/710,500.84
  6. Step 6: Final answer
    x = 535,730.43

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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.