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Finding the Fourth Proportional to 622,692.40, 934,038.60 and 307,764.40

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Solution

The fourth proportional to 622,692.40, 934,038.60 and 307,764.40 is: 461,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,692.40 : 934,038.60 = 307,764.40 : x
  2. Step 2: Convert to fraction form
    622,692.40/934,038.60 = 307,764.40/x
  3. Step 3: Cross multiply
    622,692.40x = 934,038.60 × 307,764.40
  4. Step 4: Simplify right side
    622,692.40x = 287,463,829,305.84
  5. Step 5: Solve for x
    x = 287,463,829,305.84/622,692.40
  6. Step 6: Final answer
    x = 461,646.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.