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Finding the Fourth Proportional to 883,245.40, 1,218,883.26 and 480,840.28

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Solution

The fourth proportional to 883,245.40, 1,218,883.26 and 480,840.28 is: 663,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,245.40 : 1,218,883.26 = 480,840.28 : x
  2. Step 2: Convert to fraction form
    883,245.40/1,218,883.26 = 480,840.28/x
  3. Step 3: Cross multiply
    883,245.40x = 1,218,883.26 × 480,840.28
  4. Step 4: Simplify right side
    883,245.40x = 586,088,168,025.71
  5. Step 5: Solve for x
    x = 586,088,168,025.71/883,245.40
  6. Step 6: Final answer
    x = 663,562.10

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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.