Home / 680,748.40-1,019,567.40-400,812.40

Finding the Fourth Proportional to 680,748.40, 1,019,567.40 and 400,812.40

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Solution

The fourth proportional to 680,748.40, 1,019,567.40 and 400,812.40 is: 600,302.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,748.40 : 1,019,567.40 = 400,812.40 : x
  2. Step 2: Convert to fraction form
    680,748.40/1,019,567.40 = 400,812.40/x
  3. Step 3: Cross multiply
    680,748.40x = 1,019,567.40 × 400,812.40
  4. Step 4: Simplify right side
    680,748.40x = 408,655,256,555.76
  5. Step 5: Solve for x
    x = 408,655,256,555.76/680,748.40
  6. Step 6: Final answer
    x = 600,302.93

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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.