Home / 578,718.40-868,077.60-199,638.40

Finding the Fourth Proportional to 578,718.40, 868,077.60 and 199,638.40

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Solution

The fourth proportional to 578,718.40, 868,077.60 and 199,638.40 is: 299,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,718.40 : 868,077.60 = 199,638.40 : x
  2. Step 2: Convert to fraction form
    578,718.40/868,077.60 = 199,638.40/x
  3. Step 3: Cross multiply
    578,718.40x = 868,077.60 × 199,638.40
  4. Step 4: Simplify right side
    578,718.40x = 173,301,623,139.84
  5. Step 5: Solve for x
    x = 173,301,623,139.84/578,718.40
  6. Step 6: Final answer
    x = 299,457.60

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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.