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Finding the Fourth Proportional to 530,822.40, 796,233.60 and 390,854.40

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Solution

The fourth proportional to 530,822.40, 796,233.60 and 390,854.40 is: 586,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,822.40 : 796,233.60 = 390,854.40 : x
  2. Step 2: Convert to fraction form
    530,822.40/796,233.60 = 390,854.40/x
  3. Step 3: Cross multiply
    530,822.40x = 796,233.60 × 390,854.40
  4. Step 4: Simplify right side
    530,822.40x = 311,211,405,987.84
  5. Step 5: Solve for x
    x = 311,211,405,987.84/530,822.40
  6. Step 6: Final answer
    x = 586,281.60

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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.