Home / 812,919.84-1,121,840.64-468,749.76

Finding the Fourth Proportional to 812,919.84, 1,121,840.64 and 468,749.76

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Solution

The fourth proportional to 812,919.84, 1,121,840.64 and 468,749.76 is: 646,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,919.84 : 1,121,840.64 = 468,749.76 : x
  2. Step 2: Convert to fraction form
    812,919.84/1,121,840.64 = 468,749.76/x
  3. Step 3: Cross multiply
    812,919.84x = 1,121,840.64 × 468,749.76
  4. Step 4: Simplify right side
    812,919.84x = 525,862,530,758.25
  5. Step 5: Solve for x
    x = 525,862,530,758.25/812,919.84
  6. Step 6: Final answer
    x = 646,881.16

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1.5x scale

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.