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Finding the Fourth Proportional to 526,068.60, 789,621.30 and 260,129.40

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Solution

The fourth proportional to 526,068.60, 789,621.30 and 260,129.40 is: 390,450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,068.60 : 789,621.30 = 260,129.40 : x
  2. Step 2: Convert to fraction form
    526,068.60/789,621.30 = 260,129.40/x
  3. Step 3: Cross multiply
    526,068.60x = 789,621.30 × 260,129.40
  4. Step 4: Simplify right side
    526,068.60x = 205,403,714,996.22
  5. Step 5: Solve for x
    x = 205,403,714,996.22/526,068.60
  6. Step 6: Final answer
    x = 390,450.44

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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.