Home / 738,124.80-1,107,129.60-288,758.40

Finding the Fourth Proportional to 738,124.80, 1,107,129.60 and 288,758.40

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Solution

The fourth proportional to 738,124.80, 1,107,129.60 and 288,758.40 is: 433,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,124.80 : 1,107,129.60 = 288,758.40 : x
  2. Step 2: Convert to fraction form
    738,124.80/1,107,129.60 = 288,758.40/x
  3. Step 3: Cross multiply
    738,124.80x = 1,107,129.60 × 288,758.40
  4. Step 4: Simplify right side
    738,124.80x = 319,692,971,888.64
  5. Step 5: Solve for x
    x = 319,692,971,888.64/738,124.80
  6. Step 6: Final answer
    x = 433,115.07

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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.