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Finding the Fourth Proportional to 606,578.10, 908,117.55 and 407,123.70

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Solution

The fourth proportional to 606,578.10, 908,117.55 and 407,123.70 is: 609,511.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,578.10 : 908,117.55 = 407,123.70 : x
  2. Step 2: Convert to fraction form
    606,578.10/908,117.55 = 407,123.70/x
  3. Step 3: Cross multiply
    606,578.10x = 908,117.55 × 407,123.70
  4. Step 4: Simplify right side
    606,578.10x = 369,716,176,990.94
  5. Step 5: Solve for x
    x = 369,716,176,990.94/606,578.10
  6. Step 6: Final answer
    x = 609,511.25

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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.