Home / 738,346.50-1,018,918.58-398,814.75

Finding the Fourth Proportional to 738,346.50, 1,018,918.58 and 398,814.75

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Solution

The fourth proportional to 738,346.50, 1,018,918.58 and 398,814.75 is: 550,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,346.50 : 1,018,918.58 = 398,814.75 : x
  2. Step 2: Convert to fraction form
    738,346.50/1,018,918.58 = 398,814.75/x
  3. Step 3: Cross multiply
    738,346.50x = 1,018,918.58 × 398,814.75
  4. Step 4: Simplify right side
    738,346.50x = 406,359,756,758.98
  5. Step 5: Solve for x
    x = 406,359,756,758.98/738,346.50
  6. Step 6: Final answer
    x = 550,364.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.