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Finding the Fourth Proportional to 519,013.36, 716,116.08 and 315,059.20

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Solution

The fourth proportional to 519,013.36, 716,116.08 and 315,059.20 is: 434,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,013.36 : 716,116.08 = 315,059.20 : x
  2. Step 2: Convert to fraction form
    519,013.36/716,116.08 = 315,059.20/x
  3. Step 3: Cross multiply
    519,013.36x = 716,116.08 × 315,059.20
  4. Step 4: Simplify right side
    519,013.36x = 225,618,959,271.94
  5. Step 5: Solve for x
    x = 225,618,959,271.94/519,013.36
  6. Step 6: Final answer
    x = 434,707.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.