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Finding the Fourth Proportional to 887,000.80, 1,330,598.40 and 859,007.20

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Solution

The fourth proportional to 887,000.80, 1,330,598.40 and 859,007.20 is: 1,288,604.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,000.80 : 1,330,598.40 = 859,007.20 : x
  2. Step 2: Convert to fraction form
    887,000.80/1,330,598.40 = 859,007.20/x
  3. Step 3: Cross multiply
    887,000.80x = 1,330,598.40 × 859,007.20
  4. Step 4: Simplify right side
    887,000.80x = 1,142,993,605,908.48
  5. Step 5: Solve for x
    x = 1,142,993,605,908.48/887,000.80
  6. Step 6: Final answer
    x = 1,288,604.93

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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.