Home / 686,077.02-946,785.34-380,173.20

Finding the Fourth Proportional to 686,077.02, 946,785.34 and 380,173.20

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Solution

The fourth proportional to 686,077.02, 946,785.34 and 380,173.20 is: 524,638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,077.02 : 946,785.34 = 380,173.20 : x
  2. Step 2: Convert to fraction form
    686,077.02/946,785.34 = 380,173.20/x
  3. Step 3: Cross multiply
    686,077.02x = 946,785.34 × 380,173.20
  4. Step 4: Simplify right side
    686,077.02x = 359,942,412,420.89
  5. Step 5: Solve for x
    x = 359,942,412,420.89/686,077.02
  6. Step 6: Final answer
    x = 524,638.49

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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.