Home / 687,065.40-1,030,605.30-188,429.40

Finding the Fourth Proportional to 687,065.40, 1,030,605.30 and 188,429.40

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Solution

The fourth proportional to 687,065.40, 1,030,605.30 and 188,429.40 is: 282,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,065.40 : 1,030,605.30 = 188,429.40 : x
  2. Step 2: Convert to fraction form
    687,065.40/1,030,605.30 = 188,429.40/x
  3. Step 3: Cross multiply
    687,065.40x = 1,030,605.30 × 188,429.40
  4. Step 4: Simplify right side
    687,065.40x = 194,196,338,315.82
  5. Step 5: Solve for x
    x = 194,196,338,315.82/687,065.40
  6. Step 6: Final answer
    x = 282,646.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.