Home / 770,142.80-1,154,436.60-349,720.40

Finding the Fourth Proportional to 770,142.80, 1,154,436.60 and 349,720.40

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Solution

The fourth proportional to 770,142.80, 1,154,436.60 and 349,720.40 is: 524,227.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,142.80 : 1,154,436.60 = 349,720.40 : x
  2. Step 2: Convert to fraction form
    770,142.80/1,154,436.60 = 349,720.40/x
  3. Step 3: Cross multiply
    770,142.80x = 1,154,436.60 × 349,720.40
  4. Step 4: Simplify right side
    770,142.80x = 403,730,029,526.64
  5. Step 5: Solve for x
    x = 403,730,029,526.64/770,142.80
  6. Step 6: Final answer
    x = 524,227.49

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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.