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Finding the Fourth Proportional to 718,763.68, 992,212.70 and 464,239

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Solution

The fourth proportional to 718,763.68, 992,212.70 and 464,239 is: 640,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,763.68 : 992,212.70 = 464,239 : x
  2. Step 2: Convert to fraction form
    718,763.68/992,212.70 = 464,239/x
  3. Step 3: Cross multiply
    718,763.68x = 992,212.70 × 464,239
  4. Step 4: Simplify right side
    718,763.68x = 460,623,831,635.30
  5. Step 5: Solve for x
    x = 460,623,831,635.30/718,763.68
  6. Step 6: Final answer
    x = 640,855.74

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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.