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Finding the Fourth Proportional to 661,538.34, 912,922.88 and 375,058.40

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Solution

The fourth proportional to 661,538.34, 912,922.88 and 375,058.40 is: 517,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,538.34 : 912,922.88 = 375,058.40 : x
  2. Step 2: Convert to fraction form
    661,538.34/912,922.88 = 375,058.40/x
  3. Step 3: Cross multiply
    661,538.34x = 912,922.88 × 375,058.40
  4. Step 4: Simplify right side
    661,538.34x = 342,399,394,696.19
  5. Step 5: Solve for x
    x = 342,399,394,696.19/661,538.34
  6. Step 6: Final answer
    x = 517,580.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.