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Finding the Fourth Proportional to 566,978.40, 849,301.20 and 389,685.60

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Solution

The fourth proportional to 566,978.40, 849,301.20 and 389,685.60 is: 583,726.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,978.40 : 849,301.20 = 389,685.60 : x
  2. Step 2: Convert to fraction form
    566,978.40/849,301.20 = 389,685.60/x
  3. Step 3: Cross multiply
    566,978.40x = 849,301.20 × 389,685.60
  4. Step 4: Simplify right side
    566,978.40x = 330,960,447,702.72
  5. Step 5: Solve for x
    x = 330,960,447,702.72/566,978.40
  6. Step 6: Final answer
    x = 583,726.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.