Home / 919,657.89-1,379,545.16-288,596.61

Finding the Fourth Proportional to 919,657.89, 1,379,545.16 and 288,596.61

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Solution

The fourth proportional to 919,657.89, 1,379,545.16 and 288,596.61 is: 432,913.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,657.89 : 1,379,545.16 = 288,596.61 : x
  2. Step 2: Convert to fraction form
    919,657.89/1,379,545.16 = 288,596.61/x
  3. Step 3: Cross multiply
    919,657.89x = 1,379,545.16 × 288,596.61
  4. Step 4: Simplify right side
    919,657.89x = 398,132,055,074.93
  5. Step 5: Solve for x
    x = 398,132,055,074.93/919,657.89
  6. Step 6: Final answer
    x = 432,913.22

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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.