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Finding the Fourth Proportional to 564,801.12, 779,394.96 and 310,111.20

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Solution

The fourth proportional to 564,801.12, 779,394.96 and 310,111.20 is: 427,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,801.12 : 779,394.96 = 310,111.20 : x
  2. Step 2: Convert to fraction form
    564,801.12/779,394.96 = 310,111.20/x
  3. Step 3: Cross multiply
    564,801.12x = 779,394.96 × 310,111.20
  4. Step 4: Simplify right side
    564,801.12x = 241,699,106,319.55
  5. Step 5: Solve for x
    x = 241,699,106,319.55/564,801.12
  6. Step 6: Final answer
    x = 427,936.66

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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.