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Finding the Fourth Proportional to 620,012.40, 930,018.60 and 495,596.40

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Solution

The fourth proportional to 620,012.40, 930,018.60 and 495,596.40 is: 743,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,012.40 : 930,018.60 = 495,596.40 : x
  2. Step 2: Convert to fraction form
    620,012.40/930,018.60 = 495,596.40/x
  3. Step 3: Cross multiply
    620,012.40x = 930,018.60 × 495,596.40
  4. Step 4: Simplify right side
    620,012.40x = 460,913,870,093.04
  5. Step 5: Solve for x
    x = 460,913,870,093.04/620,012.40
  6. Step 6: Final answer
    x = 743,394.60

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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.