Home / 1,076,701.40-1,615,798-428,211.16

Finding the Fourth Proportional to 1,076,701.40, 1,615,798 and 428,211.16

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Solution

The fourth proportional to 1,076,701.40, 1,615,798 and 428,211.16 is: 642,613.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,701.40 : 1,615,798 = 428,211.16 : x
  2. Step 2: Convert to fraction form
    1,076,701.40/1,615,798 = 428,211.16/x
  3. Step 3: Cross multiply
    1,076,701.40x = 1,615,798 × 428,211.16
  4. Step 4: Simplify right side
    1,076,701.40x = 691,902,735,905.68
  5. Step 5: Solve for x
    x = 691,902,735,905.68/1,076,701.40
  6. Step 6: Final answer
    x = 642,613.39

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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.