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Finding the Fourth Proportional to 598,900.30, 898,350.45 and 386,323.90

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Solution

The fourth proportional to 598,900.30, 898,350.45 and 386,323.90 is: 579,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,900.30 : 898,350.45 = 386,323.90 : x
  2. Step 2: Convert to fraction form
    598,900.30/898,350.45 = 386,323.90/x
  3. Step 3: Cross multiply
    598,900.30x = 898,350.45 × 386,323.90
  4. Step 4: Simplify right side
    598,900.30x = 347,054,249,410.76
  5. Step 5: Solve for x
    x = 347,054,249,410.76/598,900.30
  6. Step 6: Final answer
    x = 579,485.85

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Double scale
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Similar ratio
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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.