Home / 870,836-1,201,748.85-488,862.68

Finding the Fourth Proportional to 870,836, 1,201,748.85 and 488,862.68

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Solution

The fourth proportional to 870,836, 1,201,748.85 and 488,862.68 is: 674,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,836 : 1,201,748.85 = 488,862.68 : x
  2. Step 2: Convert to fraction form
    870,836/1,201,748.85 = 488,862.68/x
  3. Step 3: Cross multiply
    870,836x = 1,201,748.85 × 488,862.68
  4. Step 4: Simplify right side
    870,836x = 587,490,163,497.92
  5. Step 5: Solve for x
    x = 587,490,163,497.92/870,836
  6. Step 6: Final answer
    x = 674,627.79

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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.