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Finding the Fourth Proportional to 620,825.63, 930,459.35 and 265,421.93

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Solution

The fourth proportional to 620,825.63, 930,459.35 and 265,421.93 is: 397,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,825.63 : 930,459.35 = 265,421.93 : x
  2. Step 2: Convert to fraction form
    620,825.63/930,459.35 = 265,421.93/x
  3. Step 3: Cross multiply
    620,825.63x = 930,459.35 × 265,421.93
  4. Step 4: Simplify right side
    620,825.63x = 246,964,312,474.80
  5. Step 5: Solve for x
    x = 246,964,312,474.80/620,825.63
  6. Step 6: Final answer
    x = 397,799.80

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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.