Home / 687,482.74-1,031,208.27-404,965.47

Finding the Fourth Proportional to 687,482.74, 1,031,208.27 and 404,965.47

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Solution

The fourth proportional to 687,482.74, 1,031,208.27 and 404,965.47 is: 607,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,482.74 : 1,031,208.27 = 404,965.47 : x
  2. Step 2: Convert to fraction form
    687,482.74/1,031,208.27 = 404,965.47/x
  3. Step 3: Cross multiply
    687,482.74x = 1,031,208.27 × 404,965.47
  4. Step 4: Simplify right side
    687,482.74x = 417,603,744,076.85
  5. Step 5: Solve for x
    x = 417,603,744,076.85/687,482.74
  6. Step 6: Final answer
    x = 607,438.88

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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.