Home / 870,261.62-1,200,981.71-488,316.65

Finding the Fourth Proportional to 870,261.62, 1,200,981.71 and 488,316.65

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Solution

The fourth proportional to 870,261.62, 1,200,981.71 and 488,316.65 is: 673,888.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,261.62 : 1,200,981.71 = 488,316.65 : x
  2. Step 2: Convert to fraction form
    870,261.62/1,200,981.71 = 488,316.65/x
  3. Step 3: Cross multiply
    870,261.62x = 1,200,981.71 × 488,316.65
  4. Step 4: Simplify right side
    870,261.62x = 586,459,356,891.98
  5. Step 5: Solve for x
    x = 586,459,356,891.98/870,261.62
  6. Step 6: Final answer
    x = 673,888.57

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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.