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Finding the Fourth Proportional to 992,486.40, 1,488,729.60 and 768,537.60

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Solution

The fourth proportional to 992,486.40, 1,488,729.60 and 768,537.60 is: 1,152,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,486.40 : 1,488,729.60 = 768,537.60 : x
  2. Step 2: Convert to fraction form
    992,486.40/1,488,729.60 = 768,537.60/x
  3. Step 3: Cross multiply
    992,486.40x = 1,488,729.60 × 768,537.60
  4. Step 4: Simplify right side
    992,486.40x = 1,144,144,673,832.96
  5. Step 5: Solve for x
    x = 1,144,144,673,832.96/992,486.40
  6. Step 6: Final answer
    x = 1,152,806.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.