Home / 877,891.20-1,315,929.60-477,686.40

Finding the Fourth Proportional to 877,891.20, 1,315,929.60 and 477,686.40

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Solution

The fourth proportional to 877,891.20, 1,315,929.60 and 477,686.40 is: 716,035.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,891.20 : 1,315,929.60 = 477,686.40 : x
  2. Step 2: Convert to fraction form
    877,891.20/1,315,929.60 = 477,686.40/x
  3. Step 3: Cross multiply
    877,891.20x = 1,315,929.60 × 477,686.40
  4. Step 4: Simplify right side
    877,891.20x = 628,601,673,277.44
  5. Step 5: Solve for x
    x = 628,601,673,277.44/877,891.20
  6. Step 6: Final answer
    x = 716,035.97

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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.