Home / 718,222.16-991,153.23-395,943.79

Finding the Fourth Proportional to 718,222.16, 991,153.23 and 395,943.79

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Solution

The fourth proportional to 718,222.16, 991,153.23 and 395,943.79 is: 546,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,222.16 : 991,153.23 = 395,943.79 : x
  2. Step 2: Convert to fraction form
    718,222.16/991,153.23 = 395,943.79/x
  3. Step 3: Cross multiply
    718,222.16x = 991,153.23 × 395,943.79
  4. Step 4: Simplify right side
    718,222.16x = 392,440,966,900.61
  5. Step 5: Solve for x
    x = 392,440,966,900.61/718,222.16
  6. Step 6: Final answer
    x = 546,406.09

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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.