Home / 692,018.58-954,985.77-390,212.58

Finding the Fourth Proportional to 692,018.58, 954,985.77 and 390,212.58

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Solution

The fourth proportional to 692,018.58, 954,985.77 and 390,212.58 is: 538,493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,018.58 : 954,985.77 = 390,212.58 : x
  2. Step 2: Convert to fraction form
    692,018.58/954,985.77 = 390,212.58/x
  3. Step 3: Cross multiply
    692,018.58x = 954,985.77 × 390,212.58
  4. Step 4: Simplify right side
    692,018.58x = 372,647,461,174.99
  5. Step 5: Solve for x
    x = 372,647,461,174.99/692,018.58
  6. Step 6: Final answer
    x = 538,493.43

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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.