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Finding the Fourth Proportional to 879,302.80, 1,318,954.20 and 520,051.60

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Solution

The fourth proportional to 879,302.80, 1,318,954.20 and 520,051.60 is: 780,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,302.80 : 1,318,954.20 = 520,051.60 : x
  2. Step 2: Convert to fraction form
    879,302.80/1,318,954.20 = 520,051.60/x
  3. Step 3: Cross multiply
    879,302.80x = 1,318,954.20 × 520,051.60
  4. Step 4: Simplify right side
    879,302.80x = 685,924,242,036.72
  5. Step 5: Solve for x
    x = 685,924,242,036.72/879,302.80
  6. Step 6: Final answer
    x = 780,077.40

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Similar ratio
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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.