Home / 876,720.20-1,315,211.70-371,280.20

Finding the Fourth Proportional to 876,720.20, 1,315,211.70 and 371,280.20

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Solution

The fourth proportional to 876,720.20, 1,315,211.70 and 371,280.20 is: 556,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,720.20 : 1,315,211.70 = 371,280.20 : x
  2. Step 2: Convert to fraction form
    876,720.20/1,315,211.70 = 371,280.20/x
  3. Step 3: Cross multiply
    876,720.20x = 1,315,211.70 × 371,280.20
  4. Step 4: Simplify right side
    876,720.20x = 488,312,063,018.34
  5. Step 5: Solve for x
    x = 488,312,063,018.34/876,720.20
  6. Step 6: Final answer
    x = 556,975.95

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1.5x scale

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.