Home / 686,221.02-946,973.52-380,296.38

Finding the Fourth Proportional to 686,221.02, 946,973.52 and 380,296.38

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Solution

The fourth proportional to 686,221.02, 946,973.52 and 380,296.38 is: 524,802.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,221.02 : 946,973.52 = 380,296.38 : x
  2. Step 2: Convert to fraction form
    686,221.02/946,973.52 = 380,296.38/x
  3. Step 3: Cross multiply
    686,221.02x = 946,973.52 × 380,296.38
  4. Step 4: Simplify right side
    686,221.02x = 360,130,601,611.86
  5. Step 5: Solve for x
    x = 360,130,601,611.86/686,221.02
  6. Step 6: Final answer
    x = 524,802.64

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Double scale
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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.