Home / 1,392,337.35-1,921,055.13-803,487.60

Finding the Fourth Proportional to 1,392,337.35, 1,921,055.13 and 803,487.60

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Solution

The fourth proportional to 1,392,337.35, 1,921,055.13 and 803,487.60 is: 1,108,599.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,337.35 : 1,921,055.13 = 803,487.60 : x
  2. Step 2: Convert to fraction form
    1,392,337.35/1,921,055.13 = 803,487.60/x
  3. Step 3: Cross multiply
    1,392,337.35x = 1,921,055.13 × 803,487.60
  4. Step 4: Simplify right side
    1,392,337.35x = 1,543,543,975,871.39
  5. Step 5: Solve for x
    x = 1,543,543,975,871.39/1,392,337.35
  6. Step 6: Final answer
    x = 1,108,599.13

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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.