Home / 2,478,872.16-3,420,642.96-1,390,992.48

Finding the Fourth Proportional to 2,478,872.16, 3,420,642.96 and 1,390,992.48

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Solution

The fourth proportional to 2,478,872.16, 3,420,642.96 and 1,390,992.48 is: 1,919,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478,872.16 : 3,420,642.96 = 1,390,992.48 : x
  2. Step 2: Convert to fraction form
    2,478,872.16/3,420,642.96 = 1,390,992.48/x
  3. Step 3: Cross multiply
    2,478,872.16x = 3,420,642.96 × 1,390,992.48
  4. Step 4: Simplify right side
    2,478,872.16x = 4,758,088,634,124.94
  5. Step 5: Solve for x
    x = 4,758,088,634,124.94/2,478,872.16
  6. Step 6: Final answer
    x = 1,919,457.05

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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.