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Finding the Fourth Proportional to 490,335.40, 736,280.70 and 372,140.20

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Solution

The fourth proportional to 490,335.40, 736,280.70 and 372,140.20 is: 558,800.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,335.40 : 736,280.70 = 372,140.20 : x
  2. Step 2: Convert to fraction form
    490,335.40/736,280.70 = 372,140.20/x
  3. Step 3: Cross multiply
    490,335.40x = 736,280.70 × 372,140.20
  4. Step 4: Simplify right side
    490,335.40x = 273,999,646,954.14
  5. Step 5: Solve for x
    x = 273,999,646,954.14/490,335.40
  6. Step 6: Final answer
    x = 558,800.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.