Home / 780,143.10-1,170,214.65-528,200.70

Finding the Fourth Proportional to 780,143.10, 1,170,214.65 and 528,200.70

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Solution

The fourth proportional to 780,143.10, 1,170,214.65 and 528,200.70 is: 792,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.10 : 1,170,214.65 = 528,200.70 : x
  2. Step 2: Convert to fraction form
    780,143.10/1,170,214.65 = 528,200.70/x
  3. Step 3: Cross multiply
    780,143.10x = 1,170,214.65 × 528,200.70
  4. Step 4: Simplify right side
    780,143.10x = 618,108,197,280.26
  5. Step 5: Solve for x
    x = 618,108,197,280.26/780,143.10
  6. Step 6: Final answer
    x = 792,301.05

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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.