Home / 1,312,815.60-1,811,682.72-709,203.60

Finding the Fourth Proportional to 1,312,815.60, 1,811,682.72 and 709,203.60

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Solution

The fourth proportional to 1,312,815.60, 1,811,682.72 and 709,203.60 is: 978,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,815.60 : 1,811,682.72 = 709,203.60 : x
  2. Step 2: Convert to fraction form
    1,312,815.60/1,811,682.72 = 709,203.60/x
  3. Step 3: Cross multiply
    1,312,815.60x = 1,811,682.72 × 709,203.60
  4. Step 4: Simplify right side
    1,312,815.60x = 1,284,851,907,081.79
  5. Step 5: Solve for x
    x = 1,284,851,907,081.79/1,312,815.60
  6. Step 6: Final answer
    x = 978,699.45

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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.