Home / 738,191.07-1,018,703.58-398,659.32

Finding the Fourth Proportional to 738,191.07, 1,018,703.58 and 398,659.32

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Solution

The fourth proportional to 738,191.07, 1,018,703.58 and 398,659.32 is: 550,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,191.07 : 1,018,703.58 = 398,659.32 : x
  2. Step 2: Convert to fraction form
    738,191.07/1,018,703.58 = 398,659.32/x
  3. Step 3: Cross multiply
    738,191.07x = 1,018,703.58 × 398,659.32
  4. Step 4: Simplify right side
    738,191.07x = 406,115,676,484.37
  5. Step 5: Solve for x
    x = 406,115,676,484.37/738,191.07
  6. Step 6: Final answer
    x = 550,149.81

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Double scale
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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.