Home / 1,224,301.52-1,689,513-680,430.80

Finding the Fourth Proportional to 1,224,301.52, 1,689,513 and 680,430.80

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Solution

The fourth proportional to 1,224,301.52, 1,689,513 and 680,430.80 is: 938,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,301.52 : 1,689,513 = 680,430.80 : x
  2. Step 2: Convert to fraction form
    1,224,301.52/1,689,513 = 680,430.80/x
  3. Step 3: Cross multiply
    1,224,301.52x = 1,689,513 × 680,430.80
  4. Step 4: Simplify right side
    1,224,301.52x = 1,149,596,682,200.40
  5. Step 5: Solve for x
    x = 1,149,596,682,200.40/1,224,301.52
  6. Step 6: Final answer
    x = 938,981.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.