Home / 687,265.47-1,030,483.88-308,117.67

Finding the Fourth Proportional to 687,265.47, 1,030,483.88 and 308,117.67

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Solution

The fourth proportional to 687,265.47, 1,030,483.88 and 308,117.67 is: 461,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,265.47 : 1,030,483.88 = 308,117.67 : x
  2. Step 2: Convert to fraction form
    687,265.47/1,030,483.88 = 308,117.67/x
  3. Step 3: Cross multiply
    687,265.47x = 1,030,483.88 × 308,117.67
  4. Step 4: Simplify right side
    687,265.47x = 317,510,290,537.57
  5. Step 5: Solve for x
    x = 317,510,290,537.57/687,265.47
  6. Step 6: Final answer
    x = 461,990.75

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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.