Home / 628,853.40-942,416.10-403,522.20

Finding the Fourth Proportional to 628,853.40, 942,416.10 and 403,522.20

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Solution

The fourth proportional to 628,853.40, 942,416.10 and 403,522.20 is: 604,728.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,853.40 : 942,416.10 = 403,522.20 : x
  2. Step 2: Convert to fraction form
    628,853.40/942,416.10 = 403,522.20/x
  3. Step 3: Cross multiply
    628,853.40x = 942,416.10 × 403,522.20
  4. Step 4: Simplify right side
    628,853.40x = 380,285,817,987.42
  5. Step 5: Solve for x
    x = 380,285,817,987.42/628,853.40
  6. Step 6: Final answer
    x = 604,728.89

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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.