Home / 1,478,684.89-2,039,809.40-1,284,656.65

Finding the Fourth Proportional to 1,478,684.89, 2,039,809.40 and 1,284,656.65

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Solution

The fourth proportional to 1,478,684.89, 2,039,809.40 and 1,284,656.65 is: 1,772,152.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,684.89 : 2,039,809.40 = 1,284,656.65 : x
  2. Step 2: Convert to fraction form
    1,478,684.89/2,039,809.40 = 1,284,656.65/x
  3. Step 3: Cross multiply
    1,478,684.89x = 2,039,809.40 × 1,284,656.65
  4. Step 4: Simplify right side
    1,478,684.89x = 2,620,454,703,455.11
  5. Step 5: Solve for x
    x = 2,620,454,703,455.11/1,478,684.89
  6. Step 6: Final answer
    x = 1,772,152.21

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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.