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Finding the Fourth Proportional to 668,663.48, 922,755.59 and 382,189.72

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Solution

The fourth proportional to 668,663.48, 922,755.59 and 382,189.72 is: 527,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,663.48 : 922,755.59 = 382,189.72 : x
  2. Step 2: Convert to fraction form
    668,663.48/922,755.59 = 382,189.72/x
  3. Step 3: Cross multiply
    668,663.48x = 922,755.59 × 382,189.72
  4. Step 4: Simplify right side
    668,663.48x = 352,667,699,070.64
  5. Step 5: Solve for x
    x = 352,667,699,070.64/668,663.48
  6. Step 6: Final answer
    x = 527,421.80

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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.