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Finding the Fourth Proportional to 653,680.40, 901,980.72 and 367,145.60

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Solution

The fourth proportional to 653,680.40, 901,980.72 and 367,145.60 is: 506,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,680.40 : 901,980.72 = 367,145.60 : x
  2. Step 2: Convert to fraction form
    653,680.40/901,980.72 = 367,145.60/x
  3. Step 3: Cross multiply
    653,680.40x = 901,980.72 × 367,145.60
  4. Step 4: Simplify right side
    653,680.40x = 331,158,252,632.83
  5. Step 5: Solve for x
    x = 331,158,252,632.83/653,680.40
  6. Step 6: Final answer
    x = 506,605.76

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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.