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Finding the Fourth Proportional to 806,651.69, 1,210,725.66 and 407,572.71

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Solution

The fourth proportional to 806,651.69, 1,210,725.66 and 407,572.71 is: 611,737.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,651.69 : 1,210,725.66 = 407,572.71 : x
  2. Step 2: Convert to fraction form
    806,651.69/1,210,725.66 = 407,572.71/x
  3. Step 3: Cross multiply
    806,651.69x = 1,210,725.66 × 407,572.71
  4. Step 4: Simplify right side
    806,651.69x = 493,458,738,312.74
  5. Step 5: Solve for x
    x = 493,458,738,312.74/806,651.69
  6. Step 6: Final answer
    x = 611,737.07

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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.