Home / 745,145.79-1,116,838.62-318,556.86

Finding the Fourth Proportional to 745,145.79, 1,116,838.62 and 318,556.86

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Solution

The fourth proportional to 745,145.79, 1,116,838.62 and 318,556.86 is: 477,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,145.79 : 1,116,838.62 = 318,556.86 : x
  2. Step 2: Convert to fraction form
    745,145.79/1,116,838.62 = 318,556.86/x
  3. Step 3: Cross multiply
    745,145.79x = 1,116,838.62 × 318,556.86
  4. Step 4: Simplify right side
    745,145.79x = 355,776,603,913.93
  5. Step 5: Solve for x
    x = 355,776,603,913.93/745,145.79
  6. Step 6: Final answer
    x = 477,459.05

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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.