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Finding the Fourth Proportional to 440,702.57, 607,945.70 and 287,830.33

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Solution

The fourth proportional to 440,702.57, 607,945.70 and 287,830.33 is: 397,059.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,702.57 : 607,945.70 = 287,830.33 : x
  2. Step 2: Convert to fraction form
    440,702.57/607,945.70 = 287,830.33/x
  3. Step 3: Cross multiply
    440,702.57x = 607,945.70 × 287,830.33
  4. Step 4: Simplify right side
    440,702.57x = 174,985,210,652.79
  5. Step 5: Solve for x
    x = 174,985,210,652.79/440,702.57
  6. Step 6: Final answer
    x = 397,059.65

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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.