Home / 753,547.70-1,040,169.21-498,980.90

Finding the Fourth Proportional to 753,547.70, 1,040,169.21 and 498,980.90

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Solution

The fourth proportional to 753,547.70, 1,040,169.21 and 498,980.90 is: 688,774.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,547.70 : 1,040,169.21 = 498,980.90 : x
  2. Step 2: Convert to fraction form
    753,547.70/1,040,169.21 = 498,980.90/x
  3. Step 3: Cross multiply
    753,547.70x = 1,040,169.21 × 498,980.90
  4. Step 4: Simplify right side
    753,547.70x = 519,024,568,558.09
  5. Step 5: Solve for x
    x = 519,024,568,558.09/753,547.70
  6. Step 6: Final answer
    x = 688,774.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.