Home / 692,021.04-954,987.48-390,212.88

Finding the Fourth Proportional to 692,021.04, 954,987.48 and 390,212.88

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Solution

The fourth proportional to 692,021.04, 954,987.48 and 390,212.88 is: 538,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,021.04 : 954,987.48 = 390,212.88 : x
  2. Step 2: Convert to fraction form
    692,021.04/954,987.48 = 390,212.88/x
  3. Step 3: Cross multiply
    692,021.04x = 954,987.48 × 390,212.88
  4. Step 4: Simplify right side
    692,021.04x = 372,648,414,934.74
  5. Step 5: Solve for x
    x = 372,648,414,934.74/692,021.04
  6. Step 6: Final answer
    x = 538,492.90

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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.