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Finding the Fourth Proportional to 553,902.40, 830,853.60 and 455,487.40

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Solution

The fourth proportional to 553,902.40, 830,853.60 and 455,487.40 is: 683,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,902.40 : 830,853.60 = 455,487.40 : x
  2. Step 2: Convert to fraction form
    553,902.40/830,853.60 = 455,487.40/x
  3. Step 3: Cross multiply
    553,902.40x = 830,853.60 × 455,487.40
  4. Step 4: Simplify right side
    553,902.40x = 378,443,346,044.64
  5. Step 5: Solve for x
    x = 378,443,346,044.64/553,902.40
  6. Step 6: Final answer
    x = 683,231.10

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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.