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Finding the Fourth Proportional to 564,420.25, 778,900.49 and 322,707.88

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Solution

The fourth proportional to 564,420.25, 778,900.49 and 322,707.88 is: 445,337.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,420.25 : 778,900.49 = 322,707.88 : x
  2. Step 2: Convert to fraction form
    564,420.25/778,900.49 = 322,707.88/x
  3. Step 3: Cross multiply
    564,420.25x = 778,900.49 × 322,707.88
  4. Step 4: Simplify right side
    564,420.25x = 251,357,325,858.86
  5. Step 5: Solve for x
    x = 251,357,325,858.86/564,420.25
  6. Step 6: Final answer
    x = 445,337.19

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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.