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Finding the Fourth Proportional to 526,166.40, 789,364.80 and 260,054.40

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Solution

The fourth proportional to 526,166.40, 789,364.80 and 260,054.40 is: 390,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,166.40 : 789,364.80 = 260,054.40 : x
  2. Step 2: Convert to fraction form
    526,166.40/789,364.80 = 260,054.40/x
  3. Step 3: Cross multiply
    526,166.40x = 789,364.80 × 260,054.40
  4. Step 4: Simplify right side
    526,166.40x = 205,277,789,445.12
  5. Step 5: Solve for x
    x = 205,277,789,445.12/526,166.40
  6. Step 6: Final answer
    x = 390,138.54

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1.5x scale

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.