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Finding the Fourth Proportional to 572,726.76, 790,341.19 and 318,094.35

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Solution

The fourth proportional to 572,726.76, 790,341.19 and 318,094.35 is: 438,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,726.76 : 790,341.19 = 318,094.35 : x
  2. Step 2: Convert to fraction form
    572,726.76/790,341.19 = 318,094.35/x
  3. Step 3: Cross multiply
    572,726.76x = 790,341.19 × 318,094.35
  4. Step 4: Simplify right side
    572,726.76x = 251,403,067,111.28
  5. Step 5: Solve for x
    x = 251,403,067,111.28/572,726.76
  6. Step 6: Final answer
    x = 438,958.13

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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.