Home / 1,140,116.40-1,709,105.40-430,621.20

Finding the Fourth Proportional to 1,140,116.40, 1,709,105.40 and 430,621.20

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Solution

The fourth proportional to 1,140,116.40, 1,709,105.40 and 430,621.20 is: 645,527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,116.40 : 1,709,105.40 = 430,621.20 : x
  2. Step 2: Convert to fraction form
    1,140,116.40/1,709,105.40 = 430,621.20/x
  3. Step 3: Cross multiply
    1,140,116.40x = 1,709,105.40 × 430,621.20
  4. Step 4: Simplify right side
    1,140,116.40x = 735,977,018,274.48
  5. Step 5: Solve for x
    x = 735,977,018,274.48/1,140,116.40
  6. Step 6: Final answer
    x = 645,527.96

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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.