Home / 870,946.90-1,201,875.87-488,989.78

Finding the Fourth Proportional to 870,946.90, 1,201,875.87 and 488,989.78

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Solution

The fourth proportional to 870,946.90, 1,201,875.87 and 488,989.78 is: 674,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,946.90 : 1,201,875.87 = 488,989.78 : x
  2. Step 2: Convert to fraction form
    870,946.90/1,201,875.87 = 488,989.78/x
  3. Step 3: Cross multiply
    870,946.90x = 1,201,875.87 × 488,989.78
  4. Step 4: Simplify right side
    870,946.90x = 587,705,016,087.63
  5. Step 5: Solve for x
    x = 587,705,016,087.63/870,946.90
  6. Step 6: Final answer
    x = 674,788.58

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1.5x scale

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.