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Finding the Fourth Proportional to 655,412.72, 904,556.58 and 368,989.16

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Solution

The fourth proportional to 655,412.72, 904,556.58 and 368,989.16 is: 509,254.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,412.72 : 904,556.58 = 368,989.16 : x
  2. Step 2: Convert to fraction form
    655,412.72/904,556.58 = 368,989.16/x
  3. Step 3: Cross multiply
    655,412.72x = 904,556.58 × 368,989.16
  4. Step 4: Simplify right side
    655,412.72x = 333,771,572,626.67
  5. Step 5: Solve for x
    x = 333,771,572,626.67/655,412.72
  6. Step 6: Final answer
    x = 509,254.04

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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.