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Finding the Fourth Proportional to 623,423.82, 860,307.66 and 351,489.33

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Solution

The fourth proportional to 623,423.82, 860,307.66 and 351,489.33 is: 485,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,423.82 : 860,307.66 = 351,489.33 : x
  2. Step 2: Convert to fraction form
    623,423.82/860,307.66 = 351,489.33/x
  3. Step 3: Cross multiply
    623,423.82x = 860,307.66 × 351,489.33
  4. Step 4: Simplify right side
    623,423.82x = 302,388,963,007.27
  5. Step 5: Solve for x
    x = 302,388,963,007.27/623,423.82
  6. Step 6: Final answer
    x = 485,045.57

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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.