Home / 671,860.35-1,005,423.56-419,259.74

Finding the Fourth Proportional to 671,860.35, 1,005,423.56 and 419,259.74

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Solution

The fourth proportional to 671,860.35, 1,005,423.56 and 419,259.74 is: 627,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,860.35 : 1,005,423.56 = 419,259.74 : x
  2. Step 2: Convert to fraction form
    671,860.35/1,005,423.56 = 419,259.74/x
  3. Step 3: Cross multiply
    671,860.35x = 1,005,423.56 × 419,259.74
  4. Step 4: Simplify right side
    671,860.35x = 421,533,613,232.06
  5. Step 5: Solve for x
    x = 421,533,613,232.06/671,860.35
  6. Step 6: Final answer
    x = 627,412.55

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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.