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Finding the Fourth Proportional to 622,140.40, 933,210.60 and 307,212.40

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Solution

The fourth proportional to 622,140.40, 933,210.60 and 307,212.40 is: 460,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,140.40 : 933,210.60 = 307,212.40 : x
  2. Step 2: Convert to fraction form
    622,140.40/933,210.60 = 307,212.40/x
  3. Step 3: Cross multiply
    622,140.40x = 933,210.60 × 307,212.40
  4. Step 4: Simplify right side
    622,140.40x = 286,693,868,131.44
  5. Step 5: Solve for x
    x = 286,693,868,131.44/622,140.40
  6. Step 6: Final answer
    x = 460,818.60

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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.