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Finding the Fourth Proportional to 476,768.40, 715,777.64 and 319,699.68

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Solution

The fourth proportional to 476,768.40, 715,777.64 and 319,699.68 is: 479,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,768.40 : 715,777.64 = 319,699.68 : x
  2. Step 2: Convert to fraction form
    476,768.40/715,777.64 = 319,699.68/x
  3. Step 3: Cross multiply
    476,768.40x = 715,777.64 × 319,699.68
  4. Step 4: Simplify right side
    476,768.40x = 228,833,882,459.16
  5. Step 5: Solve for x
    x = 228,833,882,459.16/476,768.40
  6. Step 6: Final answer
    x = 479,968.64

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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.