Home / 689,678.21-1,034,666.21-209,943.52

Finding the Fourth Proportional to 689,678.21, 1,034,666.21 and 209,943.52

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Solution

The fourth proportional to 689,678.21, 1,034,666.21 and 209,943.52 is: 314,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,678.21 : 1,034,666.21 = 209,943.52 : x
  2. Step 2: Convert to fraction form
    689,678.21/1,034,666.21 = 209,943.52/x
  3. Step 3: Cross multiply
    689,678.21x = 1,034,666.21 × 209,943.52
  4. Step 4: Simplify right side
    689,678.21x = 217,221,464,090.65
  5. Step 5: Solve for x
    x = 217,221,464,090.65/689,678.21
  6. Step 6: Final answer
    x = 314,960.60

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1.5x scale

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.