Home / 1,213,871.60-1,820,807.40-425,903.60

Finding the Fourth Proportional to 1,213,871.60, 1,820,807.40 and 425,903.60

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Solution

The fourth proportional to 1,213,871.60, 1,820,807.40 and 425,903.60 is: 638,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,871.60 : 1,820,807.40 = 425,903.60 : x
  2. Step 2: Convert to fraction form
    1,213,871.60/1,820,807.40 = 425,903.60/x
  3. Step 3: Cross multiply
    1,213,871.60x = 1,820,807.40 × 425,903.60
  4. Step 4: Simplify right side
    1,213,871.60x = 775,488,426,566.64
  5. Step 5: Solve for x
    x = 775,488,426,566.64/1,213,871.60
  6. Step 6: Final answer
    x = 638,855.40

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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.