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Finding the Fourth Proportional to 435,656.80, 653,485.20 and 380,360.80

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Solution

The fourth proportional to 435,656.80, 653,485.20 and 380,360.80 is: 570,541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,656.80 : 653,485.20 = 380,360.80 : x
  2. Step 2: Convert to fraction form
    435,656.80/653,485.20 = 380,360.80/x
  3. Step 3: Cross multiply
    435,656.80x = 653,485.20 × 380,360.80
  4. Step 4: Simplify right side
    435,656.80x = 248,560,153,460.16
  5. Step 5: Solve for x
    x = 248,560,153,460.16/435,656.80
  6. Step 6: Final answer
    x = 570,541.20

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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.