Home / 876,121.80-1,314,182.70-315,083.40

Finding the Fourth Proportional to 876,121.80, 1,314,182.70 and 315,083.40

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Solution

The fourth proportional to 876,121.80, 1,314,182.70 and 315,083.40 is: 472,625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,121.80 : 1,314,182.70 = 315,083.40 : x
  2. Step 2: Convert to fraction form
    876,121.80/1,314,182.70 = 315,083.40/x
  3. Step 3: Cross multiply
    876,121.80x = 1,314,182.70 × 315,083.40
  4. Step 4: Simplify right side
    876,121.80x = 414,077,153,337.18
  5. Step 5: Solve for x
    x = 414,077,153,337.18/876,121.80
  6. Step 6: Final answer
    x = 472,625.10

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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.