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Finding the Fourth Proportional to 710,602.83, 980,644.73 and 388,326.51

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Solution

The fourth proportional to 710,602.83, 980,644.73 and 388,326.51 is: 535,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,602.83 : 980,644.73 = 388,326.51 : x
  2. Step 2: Convert to fraction form
    710,602.83/980,644.73 = 388,326.51/x
  3. Step 3: Cross multiply
    710,602.83x = 980,644.73 × 388,326.51
  4. Step 4: Simplify right side
    710,602.83x = 380,810,346,521.61
  5. Step 5: Solve for x
    x = 380,810,346,521.61/710,602.83
  6. Step 6: Final answer
    x = 535,897.59

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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.