Home / 1,918,729.14-2,877,129.81-638,884.20

Finding the Fourth Proportional to 1,918,729.14, 2,877,129.81 and 638,884.20

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Solution

The fourth proportional to 1,918,729.14, 2,877,129.81 and 638,884.20 is: 958,005.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,729.14 : 2,877,129.81 = 638,884.20 : x
  2. Step 2: Convert to fraction form
    1,918,729.14/2,877,129.81 = 638,884.20/x
  3. Step 3: Cross multiply
    1,918,729.14x = 2,877,129.81 × 638,884.20
  4. Step 4: Simplify right side
    1,918,729.14x = 1,838,152,776,958.00
  5. Step 5: Solve for x
    x = 1,838,152,776,958.00/1,918,729.14
  6. Step 6: Final answer
    x = 958,005.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.