Home / 738,210.30-1,107,315.45-620,112.30

Finding the Fourth Proportional to 738,210.30, 1,107,315.45 and 620,112.30

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Solution

The fourth proportional to 738,210.30, 1,107,315.45 and 620,112.30 is: 930,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,210.30 : 1,107,315.45 = 620,112.30 : x
  2. Step 2: Convert to fraction form
    738,210.30/1,107,315.45 = 620,112.30/x
  3. Step 3: Cross multiply
    738,210.30x = 1,107,315.45 × 620,112.30
  4. Step 4: Simplify right side
    738,210.30x = 686,659,930,525.04
  5. Step 5: Solve for x
    x = 686,659,930,525.04/738,210.30
  6. Step 6: Final answer
    x = 930,168.45

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Double scale
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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.