Home / 770,009.20-1,155,013.80-209,113.20

Finding the Fourth Proportional to 770,009.20, 1,155,013.80 and 209,113.20

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Solution

The fourth proportional to 770,009.20, 1,155,013.80 and 209,113.20 is: 313,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,009.20 : 1,155,013.80 = 209,113.20 : x
  2. Step 2: Convert to fraction form
    770,009.20/1,155,013.80 = 209,113.20/x
  3. Step 3: Cross multiply
    770,009.20x = 1,155,013.80 × 209,113.20
  4. Step 4: Simplify right side
    770,009.20x = 241,528,631,762.16
  5. Step 5: Solve for x
    x = 241,528,631,762.16/770,009.20
  6. Step 6: Final answer
    x = 313,669.80

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Similar ratio
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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.