Home / 1,312,728.50-1,811,566.95-709,116.50

Finding the Fourth Proportional to 1,312,728.50, 1,811,566.95 and 709,116.50

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Solution

The fourth proportional to 1,312,728.50, 1,811,566.95 and 709,116.50 is: 978,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,728.50 : 1,811,566.95 = 709,116.50 : x
  2. Step 2: Convert to fraction form
    1,312,728.50/1,811,566.95 = 709,116.50/x
  3. Step 3: Cross multiply
    1,312,728.50x = 1,811,566.95 × 709,116.50
  4. Step 4: Simplify right side
    1,312,728.50x = 1,284,612,015,099.68
  5. Step 5: Solve for x
    x = 1,284,612,015,099.68/1,312,728.50
  6. Step 6: Final answer
    x = 978,581.65

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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.