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Finding the Fourth Proportional to 812,340, 1,120,873.68 and 525,820.32

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Solution

The fourth proportional to 812,340, 1,120,873.68 and 525,820.32 is: 725,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,340 : 1,120,873.68 = 525,820.32 : x
  2. Step 2: Convert to fraction form
    812,340/1,120,873.68 = 525,820.32/x
  3. Step 3: Cross multiply
    812,340x = 1,120,873.68 × 525,820.32
  4. Step 4: Simplify right side
    812,340x = 589,378,157,097.18
  5. Step 5: Solve for x
    x = 589,378,157,097.18/812,340
  6. Step 6: Final answer
    x = 725,531.37

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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.