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Finding the Fourth Proportional to 854,482.16, 1,280,602 and 628,785.80

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Solution

The fourth proportional to 854,482.16, 1,280,602 and 628,785.80 is: 942,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,482.16 : 1,280,602 = 628,785.80 : x
  2. Step 2: Convert to fraction form
    854,482.16/1,280,602 = 628,785.80/x
  3. Step 3: Cross multiply
    854,482.16x = 1,280,602 × 628,785.80
  4. Step 4: Simplify right side
    854,482.16x = 805,224,353,051.60
  5. Step 5: Solve for x
    x = 805,224,353,051.60/854,482.16
  6. Step 6: Final answer
    x = 942,353.62

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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.