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Finding the Fourth Proportional to 650,260.40, 974,008.20 and 426,311.60

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Solution

The fourth proportional to 650,260.40, 974,008.20 and 426,311.60 is: 638,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,260.40 : 974,008.20 = 426,311.60 : x
  2. Step 2: Convert to fraction form
    650,260.40/974,008.20 = 426,311.60/x
  3. Step 3: Cross multiply
    650,260.40x = 974,008.20 × 426,311.60
  4. Step 4: Simplify right side
    650,260.40x = 415,230,994,155.12
  5. Step 5: Solve for x
    x = 415,230,994,155.12/650,260.40
  6. Step 6: Final answer
    x = 638,561.10

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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.