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Finding the Fourth Proportional to 564,703.45, 779,188.89 and 319,686.55

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Solution

The fourth proportional to 564,703.45, 779,188.89 and 319,686.55 is: 441,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,703.45 : 779,188.89 = 319,686.55 : x
  2. Step 2: Convert to fraction form
    564,703.45/779,188.89 = 319,686.55/x
  3. Step 3: Cross multiply
    564,703.45x = 779,188.89 × 319,686.55
  4. Step 4: Simplify right side
    564,703.45x = 249,096,208,042.43
  5. Step 5: Solve for x
    x = 249,096,208,042.43/564,703.45
  6. Step 6: Final answer
    x = 441,109.77

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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.