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Finding the Fourth Proportional to 564,643.19, 779,208.92 and 310,010.78

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Solution

The fourth proportional to 564,643.19, 779,208.92 and 310,010.78 is: 427,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,643.19 : 779,208.92 = 310,010.78 : x
  2. Step 2: Convert to fraction form
    564,643.19/779,208.92 = 310,010.78/x
  3. Step 3: Cross multiply
    564,643.19x = 779,208.92 × 310,010.78
  4. Step 4: Simplify right side
    564,643.19x = 241,563,159,626.06
  5. Step 5: Solve for x
    x = 241,563,159,626.06/564,643.19
  6. Step 6: Final answer
    x = 427,815.59

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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.