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Finding the Fourth Proportional to 870,195.76, 1,200,851.44 and 482,988.54

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Solution

The fourth proportional to 870,195.76, 1,200,851.44 and 482,988.54 is: 666,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,195.76 : 1,200,851.44 = 482,988.54 : x
  2. Step 2: Convert to fraction form
    870,195.76/1,200,851.44 = 482,988.54/x
  3. Step 3: Cross multiply
    870,195.76x = 1,200,851.44 × 482,988.54
  4. Step 4: Simplify right side
    870,195.76x = 579,997,483,762.50
  5. Step 5: Solve for x
    x = 579,997,483,762.50/870,195.76
  6. Step 6: Final answer
    x = 666,513.80

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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.