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Finding the Fourth Proportional to 572,585.65, 790,203.80 and 317,938.66

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Solution

The fourth proportional to 572,585.65, 790,203.80 and 317,938.66 is: 438,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,585.65 : 790,203.80 = 317,938.66 : x
  2. Step 2: Convert to fraction form
    572,585.65/790,203.80 = 317,938.66/x
  3. Step 3: Cross multiply
    572,585.65x = 790,203.80 × 317,938.66
  4. Step 4: Simplify right side
    572,585.65x = 251,236,336,118.25
  5. Step 5: Solve for x
    x = 251,236,336,118.25/572,585.65
  6. Step 6: Final answer
    x = 438,775.12

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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.