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Finding the Fourth Proportional to 622,051.40, 933,077.10 and 422,985.80

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Solution

The fourth proportional to 622,051.40, 933,077.10 and 422,985.80 is: 634,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,051.40 : 933,077.10 = 422,985.80 : x
  2. Step 2: Convert to fraction form
    622,051.40/933,077.10 = 422,985.80/x
  3. Step 3: Cross multiply
    622,051.40x = 933,077.10 × 422,985.80
  4. Step 4: Simplify right side
    622,051.40x = 394,678,363,605.18
  5. Step 5: Solve for x
    x = 394,678,363,605.18/622,051.40
  6. Step 6: Final answer
    x = 634,478.70

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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.