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Finding the Fourth Proportional to 567,000.32, 782,460.10 and 312,351.51

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Solution

The fourth proportional to 567,000.32, 782,460.10 and 312,351.51 is: 431,044.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,000.32 : 782,460.10 = 312,351.51 : x
  2. Step 2: Convert to fraction form
    567,000.32/782,460.10 = 312,351.51/x
  3. Step 3: Cross multiply
    567,000.32x = 782,460.10 × 312,351.51
  4. Step 4: Simplify right side
    567,000.32x = 244,402,592,968.87
  5. Step 5: Solve for x
    x = 244,402,592,968.87/567,000.32
  6. Step 6: Final answer
    x = 431,044.89

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1.5x scale

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.