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Finding the Fourth Proportional to 859,302.03, 1,288,978.56 and 410,070.36

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Solution

The fourth proportional to 859,302.03, 1,288,978.56 and 410,070.36 is: 615,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,302.03 : 1,288,978.56 = 410,070.36 : x
  2. Step 2: Convert to fraction form
    859,302.03/1,288,978.56 = 410,070.36/x
  3. Step 3: Cross multiply
    859,302.03x = 1,288,978.56 × 410,070.36
  4. Step 4: Simplify right side
    859,302.03x = 528,571,902,131.48
  5. Step 5: Solve for x
    x = 528,571,902,131.48/859,302.03
  6. Step 6: Final answer
    x = 615,117.72

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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.