Home / 1,189,313.10-1,783,969.65-390,620.70

Finding the Fourth Proportional to 1,189,313.10, 1,783,969.65 and 390,620.70

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Solution

The fourth proportional to 1,189,313.10, 1,783,969.65 and 390,620.70 is: 585,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,313.10 : 1,783,969.65 = 390,620.70 : x
  2. Step 2: Convert to fraction form
    1,189,313.10/1,783,969.65 = 390,620.70/x
  3. Step 3: Cross multiply
    1,189,313.10x = 1,783,969.65 × 390,620.70
  4. Step 4: Simplify right side
    1,189,313.10x = 696,855,473,461.76
  5. Step 5: Solve for x
    x = 696,855,473,461.76/1,189,313.10
  6. Step 6: Final answer
    x = 585,931.05

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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.