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Finding the Fourth Proportional to 710,332.34, 980,252.61 and 388,042.58

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Solution

The fourth proportional to 710,332.34, 980,252.61 and 388,042.58 is: 535,495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,332.34 : 980,252.61 = 388,042.58 : x
  2. Step 2: Convert to fraction form
    710,332.34/980,252.61 = 388,042.58/x
  3. Step 3: Cross multiply
    710,332.34x = 980,252.61 × 388,042.58
  4. Step 4: Simplify right side
    710,332.34x = 380,379,751,836.13
  5. Step 5: Solve for x
    x = 380,379,751,836.13/710,332.34
  6. Step 6: Final answer
    x = 535,495.47

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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.