Home / 705,556.20-1,057,556.70-390,239.40

Finding the Fourth Proportional to 705,556.20, 1,057,556.70 and 390,239.40

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Solution

The fourth proportional to 705,556.20, 1,057,556.70 and 390,239.40 is: 584,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,556.20 : 1,057,556.70 = 390,239.40 : x
  2. Step 2: Convert to fraction form
    705,556.20/1,057,556.70 = 390,239.40/x
  3. Step 3: Cross multiply
    705,556.20x = 1,057,556.70 × 390,239.40
  4. Step 4: Simplify right side
    705,556.20x = 412,700,292,073.98
  5. Step 5: Solve for x
    x = 412,700,292,073.98/705,556.20
  6. Step 6: Final answer
    x = 584,929.01

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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.