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Finding the Fourth Proportional to 891,698.64, 1,337,409.72 and 260,442.96

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Solution

The fourth proportional to 891,698.64, 1,337,409.72 and 260,442.96 is: 390,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,698.64 : 1,337,409.72 = 260,442.96 : x
  2. Step 2: Convert to fraction form
    891,698.64/1,337,409.72 = 260,442.96/x
  3. Step 3: Cross multiply
    891,698.64x = 1,337,409.72 × 260,442.96
  4. Step 4: Simplify right side
    891,698.64x = 348,318,946,209.57
  5. Step 5: Solve for x
    x = 348,318,946,209.57/891,698.64
  6. Step 6: Final answer
    x = 390,624.06

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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.