Home / 626,459.12-939,029.40-398,927.72

Finding the Fourth Proportional to 626,459.12, 939,029.40 and 398,927.72

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Solution

The fourth proportional to 626,459.12, 939,029.40 and 398,927.72 is: 597,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,459.12 : 939,029.40 = 398,927.72 : x
  2. Step 2: Convert to fraction form
    626,459.12/939,029.40 = 398,927.72/x
  3. Step 3: Cross multiply
    626,459.12x = 939,029.40 × 398,927.72
  4. Step 4: Simplify right side
    626,459.12x = 374,604,857,554.97
  5. Step 5: Solve for x
    x = 374,604,857,554.97/626,459.12
  6. Step 6: Final answer
    x = 597,971.75

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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.