Home / 623,877.40-935,816.10-340,442.20

Finding the Fourth Proportional to 623,877.40, 935,816.10 and 340,442.20

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Solution

The fourth proportional to 623,877.40, 935,816.10 and 340,442.20 is: 510,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,877.40 : 935,816.10 = 340,442.20 : x
  2. Step 2: Convert to fraction form
    623,877.40/935,816.10 = 340,442.20/x
  3. Step 3: Cross multiply
    623,877.40x = 935,816.10 × 340,442.20
  4. Step 4: Simplify right side
    623,877.40x = 318,591,291,879.42
  5. Step 5: Solve for x
    x = 318,591,291,879.42/623,877.40
  6. Step 6: Final answer
    x = 510,663.30

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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.