Home / 877,708.78-1,316,668.70-308,971.76

Finding the Fourth Proportional to 877,708.78, 1,316,668.70 and 308,971.76

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Solution

The fourth proportional to 877,708.78, 1,316,668.70 and 308,971.76 is: 463,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,708.78 : 1,316,668.70 = 308,971.76 : x
  2. Step 2: Convert to fraction form
    877,708.78/1,316,668.70 = 308,971.76/x
  3. Step 3: Cross multiply
    877,708.78x = 1,316,668.70 × 308,971.76
  4. Step 4: Simplify right side
    877,708.78x = 406,813,445,575.91
  5. Step 5: Solve for x
    x = 406,813,445,575.91/877,708.78
  6. Step 6: Final answer
    x = 463,494.79

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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.