Home / 891,000.40-1,336,551.80-260,011.60

Finding the Fourth Proportional to 891,000.40, 1,336,551.80 and 260,011.60

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Solution

The fourth proportional to 891,000.40, 1,336,551.80 and 260,011.60 is: 390,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,000.40 : 1,336,551.80 = 260,011.60 : x
  2. Step 2: Convert to fraction form
    891,000.40/1,336,551.80 = 260,011.60/x
  3. Step 3: Cross multiply
    891,000.40x = 1,336,551.80 × 260,011.60
  4. Step 4: Simplify right side
    891,000.40x = 347,518,972,000.88
  5. Step 5: Solve for x
    x = 347,518,972,000.88/891,000.40
  6. Step 6: Final answer
    x = 390,032.34

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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.