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Finding the Fourth Proportional to 478,851.70, 718,277.55 and 401,869.30

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Solution

The fourth proportional to 478,851.70, 718,277.55 and 401,869.30 is: 602,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,851.70 : 718,277.55 = 401,869.30 : x
  2. Step 2: Convert to fraction form
    478,851.70/718,277.55 = 401,869.30/x
  3. Step 3: Cross multiply
    478,851.70x = 718,277.55 × 401,869.30
  4. Step 4: Simplify right side
    478,851.70x = 288,653,696,224.22
  5. Step 5: Solve for x
    x = 288,653,696,224.22/478,851.70
  6. Step 6: Final answer
    x = 602,803.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.