Home / 687,061.54-1,030,109.40-302,627.95

Finding the Fourth Proportional to 687,061.54, 1,030,109.40 and 302,627.95

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Solution

The fourth proportional to 687,061.54, 1,030,109.40 and 302,627.95 is: 453,729.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,061.54 : 1,030,109.40 = 302,627.95 : x
  2. Step 2: Convert to fraction form
    687,061.54/1,030,109.40 = 302,627.95/x
  3. Step 3: Cross multiply
    687,061.54x = 1,030,109.40 × 302,627.95
  4. Step 4: Simplify right side
    687,061.54x = 311,739,890,847.18
  5. Step 5: Solve for x
    x = 311,739,890,847.18/687,061.54
  6. Step 6: Final answer
    x = 453,729.21

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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.