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Finding the Fourth Proportional to 403,521.76, 600,519.08 and 390,067.60

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Solution

The fourth proportional to 403,521.76, 600,519.08 and 390,067.60 is: 580,496.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,521.76 : 600,519.08 = 390,067.60 : x
  2. Step 2: Convert to fraction form
    403,521.76/600,519.08 = 390,067.60/x
  3. Step 3: Cross multiply
    403,521.76x = 600,519.08 × 390,067.60
  4. Step 4: Simplify right side
    403,521.76x = 234,243,036,289.81
  5. Step 5: Solve for x
    x = 234,243,036,289.81/403,521.76
  6. Step 6: Final answer
    x = 580,496.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.