Home / 740,515.78-1,021,916.69-400,984.03

Finding the Fourth Proportional to 740,515.78, 1,021,916.69 and 400,984.03

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Solution

The fourth proportional to 740,515.78, 1,021,916.69 and 400,984.03 is: 553,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,515.78 : 1,021,916.69 = 400,984.03 : x
  2. Step 2: Convert to fraction form
    740,515.78/1,021,916.69 = 400,984.03/x
  3. Step 3: Cross multiply
    740,515.78x = 1,021,916.69 × 400,984.03
  4. Step 4: Simplify right side
    740,515.78x = 409,772,272,680.46
  5. Step 5: Solve for x
    x = 409,772,272,680.46/740,515.78
  6. Step 6: Final answer
    x = 553,360.62

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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.