Home / 1,421,237.28-1,961,224.12-776,662.48

Finding the Fourth Proportional to 1,421,237.28, 1,961,224.12 and 776,662.48

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Solution

The fourth proportional to 1,421,237.28, 1,961,224.12 and 776,662.48 is: 1,071,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,237.28 : 1,961,224.12 = 776,662.48 : x
  2. Step 2: Convert to fraction form
    1,421,237.28/1,961,224.12 = 776,662.48/x
  3. Step 3: Cross multiply
    1,421,237.28x = 1,961,224.12 × 776,662.48
  4. Step 4: Simplify right side
    1,421,237.28x = 1,523,209,188,875.02
  5. Step 5: Solve for x
    x = 1,523,209,188,875.02/1,421,237.28
  6. Step 6: Final answer
    x = 1,071,748.69

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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.