Home / 938,416.88-1,405,352.18-649,418.72

Finding the Fourth Proportional to 938,416.88, 1,405,352.18 and 649,418.72

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Solution

The fourth proportional to 938,416.88, 1,405,352.18 and 649,418.72 is: 972,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,416.88 : 1,405,352.18 = 649,418.72 : x
  2. Step 2: Convert to fraction form
    938,416.88/1,405,352.18 = 649,418.72/x
  3. Step 3: Cross multiply
    938,416.88x = 1,405,352.18 × 649,418.72
  4. Step 4: Simplify right side
    938,416.88x = 912,662,013,884.81
  5. Step 5: Solve for x
    x = 912,662,013,884.81/938,416.88
  6. Step 6: Final answer
    x = 972,554.98

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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.