Home / 992,021.16-1,488,256.74-318,149.40

Finding the Fourth Proportional to 992,021.16, 1,488,256.74 and 318,149.40

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Solution

The fourth proportional to 992,021.16, 1,488,256.74 and 318,149.40 is: 477,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,021.16 : 1,488,256.74 = 318,149.40 : x
  2. Step 2: Convert to fraction form
    992,021.16/1,488,256.74 = 318,149.40/x
  3. Step 3: Cross multiply
    992,021.16x = 1,488,256.74 × 318,149.40
  4. Step 4: Simplify right side
    992,021.16x = 473,487,988,876.96
  5. Step 5: Solve for x
    x = 473,487,988,876.96/992,021.16
  6. Step 6: Final answer
    x = 477,296.26

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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.