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Finding the Fourth Proportional to 553,103, 830,354.72 and 339,345.64

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Solution

The fourth proportional to 553,103, 830,354.72 and 339,345.64 is: 509,448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,103 : 830,354.72 = 339,345.64 : x
  2. Step 2: Convert to fraction form
    553,103/830,354.72 = 339,345.64/x
  3. Step 3: Cross multiply
    553,103x = 830,354.72 × 339,345.64
  4. Step 4: Simplify right side
    553,103x = 281,777,253,885.42
  5. Step 5: Solve for x
    x = 281,777,253,885.42/553,103
  6. Step 6: Final answer
    x = 509,448.07

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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.