Home / 912,880.20-1,369,320.30-853,393.80

Finding the Fourth Proportional to 912,880.20, 1,369,320.30 and 853,393.80

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Solution

The fourth proportional to 912,880.20, 1,369,320.30 and 853,393.80 is: 1,280,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,880.20 : 1,369,320.30 = 853,393.80 : x
  2. Step 2: Convert to fraction form
    912,880.20/1,369,320.30 = 853,393.80/x
  3. Step 3: Cross multiply
    912,880.20x = 1,369,320.30 × 853,393.80
  4. Step 4: Simplify right side
    912,880.20x = 1,168,569,454,234.14
  5. Step 5: Solve for x
    x = 1,168,569,454,234.14/912,880.20
  6. Step 6: Final answer
    x = 1,280,090.70

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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.