Home / 770,208.35-1,155,312.65-290,306.09

Finding the Fourth Proportional to 770,208.35, 1,155,312.65 and 290,306.09

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Solution

The fourth proportional to 770,208.35, 1,155,312.65 and 290,306.09 is: 435,459.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,208.35 : 1,155,312.65 = 290,306.09 : x
  2. Step 2: Convert to fraction form
    770,208.35/1,155,312.65 = 290,306.09/x
  3. Step 3: Cross multiply
    770,208.35x = 1,155,312.65 × 290,306.09
  4. Step 4: Simplify right side
    770,208.35x = 335,394,301,763.09
  5. Step 5: Solve for x
    x = 335,394,301,763.09/770,208.35
  6. Step 6: Final answer
    x = 435,459.19

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1.5x scale

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.