Home / 852,128.20-1,276,637.10-519,315.40

Finding the Fourth Proportional to 852,128.20, 1,276,637.10 and 519,315.40

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Solution

The fourth proportional to 852,128.20, 1,276,637.10 and 519,315.40 is: 778,025.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,128.20 : 1,276,637.10 = 519,315.40 : x
  2. Step 2: Convert to fraction form
    852,128.20/1,276,637.10 = 519,315.40/x
  3. Step 3: Cross multiply
    852,128.20x = 1,276,637.10 × 519,315.40
  4. Step 4: Simplify right side
    852,128.20x = 662,977,306,241.34
  5. Step 5: Solve for x
    x = 662,977,306,241.34/852,128.20
  6. Step 6: Final answer
    x = 778,025.31

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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.