Home / 1,421,432.36-1,961,387.64-912,823.64

Finding the Fourth Proportional to 1,421,432.36, 1,961,387.64 and 912,823.64

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Solution

The fourth proportional to 1,421,432.36, 1,961,387.64 and 912,823.64 is: 1,259,575.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,432.36 : 1,961,387.64 = 912,823.64 : x
  2. Step 2: Convert to fraction form
    1,421,432.36/1,961,387.64 = 912,823.64/x
  3. Step 3: Cross multiply
    1,421,432.36x = 1,961,387.64 × 912,823.64
  4. Step 4: Simplify right side
    1,421,432.36x = 1,790,401,004,995.81
  5. Step 5: Solve for x
    x = 1,790,401,004,995.81/1,421,432.36
  6. Step 6: Final answer
    x = 1,259,575.24

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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.