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Finding the Fourth Proportional to 572,501.79, 790,077.15 and 317,853

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Solution

The fourth proportional to 572,501.79, 790,077.15 and 317,853 is: 438,650.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,501.79 : 790,077.15 = 317,853 : x
  2. Step 2: Convert to fraction form
    572,501.79/790,077.15 = 317,853/x
  3. Step 3: Cross multiply
    572,501.79x = 790,077.15 × 317,853
  4. Step 4: Simplify right side
    572,501.79x = 251,128,392,358.95
  5. Step 5: Solve for x
    x = 251,128,392,358.95/572,501.79
  6. Step 6: Final answer
    x = 438,650.84

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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.