Home / 692,019.54-954,985.41-390,211.38

Finding the Fourth Proportional to 692,019.54, 954,985.41 and 390,211.38

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Solution

The fourth proportional to 692,019.54, 954,985.41 and 390,211.38 is: 538,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,019.54 : 954,985.41 = 390,211.38 : x
  2. Step 2: Convert to fraction form
    692,019.54/954,985.41 = 390,211.38/x
  3. Step 3: Cross multiply
    692,019.54x = 954,985.41 × 390,211.38
  4. Step 4: Simplify right side
    692,019.54x = 372,646,174,715.97
  5. Step 5: Solve for x
    x = 372,646,174,715.97/692,019.54
  6. Step 6: Final answer
    x = 538,490.83

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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.