Home / 687,488.98-1,031,217.63-404,971.74

Finding the Fourth Proportional to 687,488.98, 1,031,217.63 and 404,971.74

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Solution

The fourth proportional to 687,488.98, 1,031,217.63 and 404,971.74 is: 607,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,488.98 : 1,031,217.63 = 404,971.74 : x
  2. Step 2: Convert to fraction form
    687,488.98/1,031,217.63 = 404,971.74/x
  3. Step 3: Cross multiply
    687,488.98x = 1,031,217.63 × 404,971.74
  4. Step 4: Simplify right side
    687,488.98x = 417,613,992,783.69
  5. Step 5: Solve for x
    x = 417,613,992,783.69/687,488.98
  6. Step 6: Final answer
    x = 607,448.27

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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.