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Finding the Fourth Proportional to 564,941.90, 779,667.90 and 319,970.23

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Solution

The fourth proportional to 564,941.90, 779,667.90 and 319,970.23 is: 441,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,941.90 : 779,667.90 = 319,970.23 : x
  2. Step 2: Convert to fraction form
    564,941.90/779,667.90 = 319,970.23/x
  3. Step 3: Cross multiply
    564,941.90x = 779,667.90 × 319,970.23
  4. Step 4: Simplify right side
    564,941.90x = 249,470,515,686.77
  5. Step 5: Solve for x
    x = 249,470,515,686.77/564,941.90
  6. Step 6: Final answer
    x = 441,586.15

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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.