Home / 770,145.80-1,154,441.10-349,723.40

Finding the Fourth Proportional to 770,145.80, 1,154,441.10 and 349,723.40

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Solution

The fourth proportional to 770,145.80, 1,154,441.10 and 349,723.40 is: 524,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,145.80 : 1,154,441.10 = 349,723.40 : x
  2. Step 2: Convert to fraction form
    770,145.80/1,154,441.10 = 349,723.40/x
  3. Step 3: Cross multiply
    770,145.80x = 1,154,441.10 × 349,723.40
  4. Step 4: Simplify right side
    770,145.80x = 403,735,066,591.74
  5. Step 5: Solve for x
    x = 403,735,066,591.74/770,145.80
  6. Step 6: Final answer
    x = 524,231.99

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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.