Home / 738,151.42-1,018,648.97-398,619.67

Finding the Fourth Proportional to 738,151.42, 1,018,648.97 and 398,619.67

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Solution

The fourth proportional to 738,151.42, 1,018,648.97 and 398,619.67 is: 550,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,151.42 : 1,018,648.97 = 398,619.67 : x
  2. Step 2: Convert to fraction form
    738,151.42/1,018,648.97 = 398,619.67/x
  3. Step 3: Cross multiply
    738,151.42x = 1,018,648.97 × 398,619.67
  4. Step 4: Simplify right side
    738,151.42x = 406,053,516,267.24
  5. Step 5: Solve for x
    x = 406,053,516,267.24/738,151.42
  6. Step 6: Final answer
    x = 550,095.15

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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.