Home / 738,346.69-1,018,918.84-398,814.94

Finding the Fourth Proportional to 738,346.69, 1,018,918.84 and 398,814.94

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Solution

The fourth proportional to 738,346.69, 1,018,918.84 and 398,814.94 is: 550,364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,346.69 : 1,018,918.84 = 398,814.94 : x
  2. Step 2: Convert to fraction form
    738,346.69/1,018,918.84 = 398,814.94/x
  3. Step 3: Cross multiply
    738,346.69x = 1,018,918.84 × 398,814.94
  4. Step 4: Simplify right side
    738,346.69x = 406,360,052,495.14
  5. Step 5: Solve for x
    x = 406,360,052,495.14/738,346.69
  6. Step 6: Final answer
    x = 550,364.83

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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.