Home / 1,219,989.40-1,827,499.12-578,348.30

Finding the Fourth Proportional to 1,219,989.40, 1,827,499.12 and 578,348.30

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Solution

The fourth proportional to 1,219,989.40, 1,827,499.12 and 578,348.30 is: 866,344.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,989.40 : 1,827,499.12 = 578,348.30 : x
  2. Step 2: Convert to fraction form
    1,219,989.40/1,827,499.12 = 578,348.30/x
  3. Step 3: Cross multiply
    1,219,989.40x = 1,827,499.12 × 578,348.30
  4. Step 4: Simplify right side
    1,219,989.40x = 1,056,931,012,426.37
  5. Step 5: Solve for x
    x = 1,056,931,012,426.37/1,219,989.40
  6. Step 6: Final answer
    x = 866,344.42

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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.