Home / 1,686,783.60-2,531,341.80-1,213,808.40

Finding the Fourth Proportional to 1,686,783.60, 2,531,341.80 and 1,213,808.40

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Solution

The fourth proportional to 1,686,783.60, 2,531,341.80 and 1,213,808.40 is: 1,821,551.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,783.60 : 2,531,341.80 = 1,213,808.40 : x
  2. Step 2: Convert to fraction form
    1,686,783.60/2,531,341.80 = 1,213,808.40/x
  3. Step 3: Cross multiply
    1,686,783.60x = 2,531,341.80 × 1,213,808.40
  4. Step 4: Simplify right side
    1,686,783.60x = 3,072,563,940,111.12
  5. Step 5: Solve for x
    x = 3,072,563,940,111.12/1,686,783.60
  6. Step 6: Final answer
    x = 1,821,551.94

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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.