Home / 890,999.70-1,336,499.55-554,420.40

Finding the Fourth Proportional to 890,999.70, 1,336,499.55 and 554,420.40

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Solution

The fourth proportional to 890,999.70, 1,336,499.55 and 554,420.40 is: 831,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,999.70 : 1,336,499.55 = 554,420.40 : x
  2. Step 2: Convert to fraction form
    890,999.70/1,336,499.55 = 554,420.40/x
  3. Step 3: Cross multiply
    890,999.70x = 1,336,499.55 × 554,420.40
  4. Step 4: Simplify right side
    890,999.70x = 740,982,615,110.82
  5. Step 5: Solve for x
    x = 740,982,615,110.82/890,999.70
  6. Step 6: Final answer
    x = 831,630.60

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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.