Home / 740,274.88-1,021,579.12-400,742.88

Finding the Fourth Proportional to 740,274.88, 1,021,579.12 and 400,742.88

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Solution

The fourth proportional to 740,274.88, 1,021,579.12 and 400,742.88 is: 553,025.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,274.88 : 1,021,579.12 = 400,742.88 : x
  2. Step 2: Convert to fraction form
    740,274.88/1,021,579.12 = 400,742.88/x
  3. Step 3: Cross multiply
    740,274.88x = 1,021,579.12 × 400,742.88
  4. Step 4: Simplify right side
    740,274.88x = 409,390,558,696.67
  5. Step 5: Solve for x
    x = 409,390,558,696.67/740,274.88
  6. Step 6: Final answer
    x = 553,025.06

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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.