Home / 770,136.20-1,155,182.70-349,411.40

Finding the Fourth Proportional to 770,136.20, 1,155,182.70 and 349,411.40

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Solution

The fourth proportional to 770,136.20, 1,155,182.70 and 349,411.40 is: 524,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,136.20 : 1,155,182.70 = 349,411.40 : x
  2. Step 2: Convert to fraction form
    770,136.20/1,155,182.70 = 349,411.40/x
  3. Step 3: Cross multiply
    770,136.20x = 1,155,182.70 × 349,411.40
  4. Step 4: Simplify right side
    770,136.20x = 403,634,004,462.78
  5. Step 5: Solve for x
    x = 403,634,004,462.78/770,136.20
  6. Step 6: Final answer
    x = 524,107.30

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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.