Home / 521,531.40-782,297.10-397,115.40

Finding the Fourth Proportional to 521,531.40, 782,297.10 and 397,115.40

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Solution

The fourth proportional to 521,531.40, 782,297.10 and 397,115.40 is: 595,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.40 : 782,297.10 = 397,115.40 : x
  2. Step 2: Convert to fraction form
    521,531.40/782,297.10 = 397,115.40/x
  3. Step 3: Cross multiply
    521,531.40x = 782,297.10 × 397,115.40
  4. Step 4: Simplify right side
    521,531.40x = 310,662,225,785.34
  5. Step 5: Solve for x
    x = 310,662,225,785.34/521,531.40
  6. Step 6: Final answer
    x = 595,673.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 521,532.40, 782,298.60 and 397,116.40
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.