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Finding the Fourth Proportional to 660,664.56, 910,849.53 and 476,748.78

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Solution

The fourth proportional to 660,664.56, 910,849.53 and 476,748.78 is: 657,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,664.56 : 910,849.53 = 476,748.78 : x
  2. Step 2: Convert to fraction form
    660,664.56/910,849.53 = 476,748.78/x
  3. Step 3: Cross multiply
    660,664.56x = 910,849.53 × 476,748.78
  4. Step 4: Simplify right side
    660,664.56x = 434,246,402,191.07
  5. Step 5: Solve for x
    x = 434,246,402,191.07/660,664.56
  6. Step 6: Final answer
    x = 657,287.27

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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.