Home / 919,763.90-1,379,866.67-288,677.71

Finding the Fourth Proportional to 919,763.90, 1,379,866.67 and 288,677.71

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Solution

The fourth proportional to 919,763.90, 1,379,866.67 and 288,677.71 is: 433,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,763.90 : 1,379,866.67 = 288,677.71 : x
  2. Step 2: Convert to fraction form
    919,763.90/1,379,866.67 = 288,677.71/x
  3. Step 3: Cross multiply
    919,763.90x = 1,379,866.67 × 288,677.71
  4. Step 4: Simplify right side
    919,763.90x = 398,336,750,400.93
  5. Step 5: Solve for x
    x = 398,336,750,400.93/919,763.90
  6. Step 6: Final answer
    x = 433,085.87

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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.