Home / 770,108.20-1,155,140.70-349,383.40

Finding the Fourth Proportional to 770,108.20, 1,155,140.70 and 349,383.40

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Solution

The fourth proportional to 770,108.20, 1,155,140.70 and 349,383.40 is: 524,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,108.20 : 1,155,140.70 = 349,383.40 : x
  2. Step 2: Convert to fraction form
    770,108.20/1,155,140.70 = 349,383.40/x
  3. Step 3: Cross multiply
    770,108.20x = 1,155,140.70 × 349,383.40
  4. Step 4: Simplify right side
    770,108.20x = 403,586,985,244.38
  5. Step 5: Solve for x
    x = 403,586,985,244.38/770,108.20
  6. Step 6: Final answer
    x = 524,065.30

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Double scale
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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.