Home / 628,532.85-867,394.98-356,612.19

Finding the Fourth Proportional to 628,532.85, 867,394.98 and 356,612.19

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Solution

The fourth proportional to 628,532.85, 867,394.98 and 356,612.19 is: 492,135.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,532.85 : 867,394.98 = 356,612.19 : x
  2. Step 2: Convert to fraction form
    628,532.85/867,394.98 = 356,612.19/x
  3. Step 3: Cross multiply
    628,532.85x = 867,394.98 × 356,612.19
  4. Step 4: Simplify right side
    628,532.85x = 309,323,623,412.81
  5. Step 5: Solve for x
    x = 309,323,623,412.81/628,532.85
  6. Step 6: Final answer
    x = 492,135.97

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Double scale
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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.