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Finding the Fourth Proportional to 646,248, 891,842.76 and 404,453.28

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Solution

The fourth proportional to 646,248, 891,842.76 and 404,453.28 is: 558,158.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,248 : 891,842.76 = 404,453.28 : x
  2. Step 2: Convert to fraction form
    646,248/891,842.76 = 404,453.28/x
  3. Step 3: Cross multiply
    646,248x = 891,842.76 × 404,453.28
  4. Step 4: Simplify right side
    646,248x = 360,708,729,526.25
  5. Step 5: Solve for x
    x = 360,708,729,526.25/646,248
  6. Step 6: Final answer
    x = 558,158.37

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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.