Home / 921,556.81-1,380,510.45-434,572.18

Finding the Fourth Proportional to 921,556.81, 1,380,510.45 and 434,572.18

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Solution

The fourth proportional to 921,556.81, 1,380,510.45 and 434,572.18 is: 650,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,556.81 : 1,380,510.45 = 434,572.18 : x
  2. Step 2: Convert to fraction form
    921,556.81/1,380,510.45 = 434,572.18/x
  3. Step 3: Cross multiply
    921,556.81x = 1,380,510.45 × 434,572.18
  4. Step 4: Simplify right side
    921,556.81x = 599,931,435,769.28
  5. Step 5: Solve for x
    x = 599,931,435,769.28/921,556.81
  6. Step 6: Final answer
    x = 650,997.78

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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.