Home / 891,130.80-1,336,696.20-260,108.40

Finding the Fourth Proportional to 891,130.80, 1,336,696.20 and 260,108.40

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Solution

The fourth proportional to 891,130.80, 1,336,696.20 and 260,108.40 is: 390,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,130.80 : 1,336,696.20 = 260,108.40 : x
  2. Step 2: Convert to fraction form
    891,130.80/1,336,696.20 = 260,108.40/x
  3. Step 3: Cross multiply
    891,130.80x = 1,336,696.20 × 260,108.40
  4. Step 4: Simplify right side
    891,130.80x = 347,685,909,868.08
  5. Step 5: Solve for x
    x = 347,685,909,868.08/891,130.80
  6. Step 6: Final answer
    x = 390,162.60

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Double scale
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Similar ratio
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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.