Home / 686,331.54-947,113.06-380,436.52

Finding the Fourth Proportional to 686,331.54, 947,113.06 and 380,436.52

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Solution

The fourth proportional to 686,331.54, 947,113.06 and 380,436.52 is: 524,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,331.54 : 947,113.06 = 380,436.52 : x
  2. Step 2: Convert to fraction form
    686,331.54/947,113.06 = 380,436.52/x
  3. Step 3: Cross multiply
    686,331.54x = 947,113.06 × 380,436.52
  4. Step 4: Simplify right side
    686,331.54x = 360,316,398,480.22
  5. Step 5: Solve for x
    x = 360,316,398,480.22/686,331.54
  6. Step 6: Final answer
    x = 524,988.84

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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.