Home / 740,428.38-1,021,792.05-400,896.63

Finding the Fourth Proportional to 740,428.38, 1,021,792.05 and 400,896.63

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Solution

The fourth proportional to 740,428.38, 1,021,792.05 and 400,896.63 is: 553,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,428.38 : 1,021,792.05 = 400,896.63 : x
  2. Step 2: Convert to fraction form
    740,428.38/1,021,792.05 = 400,896.63/x
  3. Step 3: Cross multiply
    740,428.38x = 1,021,792.05 × 400,896.63
  4. Step 4: Simplify right side
    740,428.38x = 409,632,989,405.79
  5. Step 5: Solve for x
    x = 409,632,989,405.79/740,428.38
  6. Step 6: Final answer
    x = 553,237.83

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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.