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Finding the Fourth Proportional to 655,788.60, 904,991.58 and 369,313.56

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Solution

The fourth proportional to 655,788.60, 904,991.58 and 369,313.56 is: 509,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,788.60 : 904,991.58 = 369,313.56 : x
  2. Step 2: Convert to fraction form
    655,788.60/904,991.58 = 369,313.56/x
  3. Step 3: Cross multiply
    655,788.60x = 904,991.58 × 369,313.56
  4. Step 4: Simplify right side
    655,788.60x = 334,225,662,179.83
  5. Step 5: Solve for x
    x = 334,225,662,179.83/655,788.60
  6. Step 6: Final answer
    x = 509,654.58

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1.5x scale

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.