Home / 645,735.02-890,743.24-403,597.36

Finding the Fourth Proportional to 645,735.02, 890,743.24 and 403,597.36

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Solution

The fourth proportional to 645,735.02, 890,743.24 and 403,597.36 is: 556,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,735.02 : 890,743.24 = 403,597.36 : x
  2. Step 2: Convert to fraction form
    645,735.02/890,743.24 = 403,597.36/x
  3. Step 3: Cross multiply
    645,735.02x = 890,743.24 × 403,597.36
  4. Step 4: Simplify right side
    645,735.02x = 359,501,620,101.85
  5. Step 5: Solve for x
    x = 359,501,620,101.85/645,735.02
  6. Step 6: Final answer
    x = 556,732.42

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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.