Home / 1,312,421.75-1,811,142.02-708,809.75

Finding the Fourth Proportional to 1,312,421.75, 1,811,142.02 and 708,809.75

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Solution

The fourth proportional to 1,312,421.75, 1,811,142.02 and 708,809.75 is: 978,157.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,421.75 : 1,811,142.02 = 708,809.75 : x
  2. Step 2: Convert to fraction form
    1,312,421.75/1,811,142.02 = 708,809.75/x
  3. Step 3: Cross multiply
    1,312,421.75x = 1,811,142.02 × 708,809.75
  4. Step 4: Simplify right side
    1,312,421.75x = 1,283,755,122,410.70
  5. Step 5: Solve for x
    x = 1,283,755,122,410.70/1,312,421.75
  6. Step 6: Final answer
    x = 978,157.46

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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.