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Finding the Fourth Proportional to 626,715.69, 864,878.09 and 340,235.84

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Solution

The fourth proportional to 626,715.69, 864,878.09 and 340,235.84 is: 469,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,715.69 : 864,878.09 = 340,235.84 : x
  2. Step 2: Convert to fraction form
    626,715.69/864,878.09 = 340,235.84/x
  3. Step 3: Cross multiply
    626,715.69x = 864,878.09 × 340,235.84
  4. Step 4: Simplify right side
    626,715.69x = 294,262,523,448.75
  5. Step 5: Solve for x
    x = 294,262,523,448.75/626,715.69
  6. Step 6: Final answer
    x = 469,531.13

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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.