Home / 1,392,276.76-1,921,224.53-772,099.72

Finding the Fourth Proportional to 1,392,276.76, 1,921,224.53 and 772,099.72

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Solution

The fourth proportional to 1,392,276.76, 1,921,224.53 and 772,099.72 is: 1,065,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,276.76 : 1,921,224.53 = 772,099.72 : x
  2. Step 2: Convert to fraction form
    1,392,276.76/1,921,224.53 = 772,099.72/x
  3. Step 3: Cross multiply
    1,392,276.76x = 1,921,224.53 × 772,099.72
  4. Step 4: Simplify right side
    1,392,276.76x = 1,483,376,908,203.51
  5. Step 5: Solve for x
    x = 1,483,376,908,203.51/1,392,276.76
  6. Step 6: Final answer
    x = 1,065,432.50

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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.