Home / 1,478,685.90-2,039,810.78-1,284,657.65

Finding the Fourth Proportional to 1,478,685.90, 2,039,810.78 and 1,284,657.65

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Solution

The fourth proportional to 1,478,685.90, 2,039,810.78 and 1,284,657.65 is: 1,772,153.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,685.90 : 2,039,810.78 = 1,284,657.65 : x
  2. Step 2: Convert to fraction form
    1,478,685.90/2,039,810.78 = 1,284,657.65/x
  3. Step 3: Cross multiply
    1,478,685.90x = 2,039,810.78 × 1,284,657.65
  4. Step 4: Simplify right side
    1,478,685.90x = 2,620,458,512,880.41
  5. Step 5: Solve for x
    x = 2,620,458,512,880.41/1,478,685.90
  6. Step 6: Final answer
    x = 1,772,153.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.