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Finding the Fourth Proportional to 647,486.60, 970,938.30 and 292,317.80

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Solution

The fourth proportional to 647,486.60, 970,938.30 and 292,317.80 is: 438,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,486.60 : 970,938.30 = 292,317.80 : x
  2. Step 2: Convert to fraction form
    647,486.60/970,938.30 = 292,317.80/x
  3. Step 3: Cross multiply
    647,486.60x = 970,938.30 × 292,317.80
  4. Step 4: Simplify right side
    647,486.60x = 283,822,547,791.74
  5. Step 5: Solve for x
    x = 283,822,547,791.74/647,486.60
  6. Step 6: Final answer
    x = 438,345.05

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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.