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Finding the Fourth Proportional to 553,603.20, 830,404.80 and 483,619.20

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Solution

The fourth proportional to 553,603.20, 830,404.80 and 483,619.20 is: 725,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,603.20 : 830,404.80 = 483,619.20 : x
  2. Step 2: Convert to fraction form
    553,603.20/830,404.80 = 483,619.20/x
  3. Step 3: Cross multiply
    553,603.20x = 830,404.80 × 483,619.20
  4. Step 4: Simplify right side
    553,603.20x = 401,599,705,052.16
  5. Step 5: Solve for x
    x = 401,599,705,052.16/553,603.20
  6. Step 6: Final answer
    x = 725,428.80

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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.