Home / 738,159.45-1,018,660.04-398,627.67

Finding the Fourth Proportional to 738,159.45, 1,018,660.04 and 398,627.67

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Solution

The fourth proportional to 738,159.45, 1,018,660.04 and 398,627.67 is: 550,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,159.45 : 1,018,660.04 = 398,627.67 : x
  2. Step 2: Convert to fraction form
    738,159.45/1,018,660.04 = 398,627.67/x
  3. Step 3: Cross multiply
    738,159.45x = 1,018,660.04 × 398,627.67
  4. Step 4: Simplify right side
    738,159.45x = 406,066,076,274.17
  5. Step 5: Solve for x
    x = 406,066,076,274.17/738,159.45
  6. Step 6: Final answer
    x = 550,106.18

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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.