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Finding the Fourth Proportional to 612,802.60, 920,188.05 and 463,211.80

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Solution

The fourth proportional to 612,802.60, 920,188.05 and 463,211.80 is: 695,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,802.60 : 920,188.05 = 463,211.80 : x
  2. Step 2: Convert to fraction form
    612,802.60/920,188.05 = 463,211.80/x
  3. Step 3: Cross multiply
    612,802.60x = 920,188.05 × 463,211.80
  4. Step 4: Simplify right side
    612,802.60x = 426,241,962,978.99
  5. Step 5: Solve for x
    x = 426,241,962,978.99/612,802.60
  6. Step 6: Final answer
    x = 695,561.61

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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.