Home / 738,136.80-1,107,147.60-288,770.40

Finding the Fourth Proportional to 738,136.80, 1,107,147.60 and 288,770.40

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Solution

The fourth proportional to 738,136.80, 1,107,147.60 and 288,770.40 is: 433,133.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,136.80 : 1,107,147.60 = 288,770.40 : x
  2. Step 2: Convert to fraction form
    738,136.80/1,107,147.60 = 288,770.40/x
  3. Step 3: Cross multiply
    738,136.80x = 1,107,147.60 × 288,770.40
  4. Step 4: Simplify right side
    738,136.80x = 319,711,455,311.04
  5. Step 5: Solve for x
    x = 319,711,455,311.04/738,136.80
  6. Step 6: Final answer
    x = 433,133.07

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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.