Home / 812,167.60-1,120,415.88-525,780.40

Finding the Fourth Proportional to 812,167.60, 1,120,415.88 and 525,780.40

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Solution

The fourth proportional to 812,167.60, 1,120,415.88 and 525,780.40 is: 725,333.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,167.60 : 1,120,415.88 = 525,780.40 : x
  2. Step 2: Convert to fraction form
    812,167.60/1,120,415.88 = 525,780.40/x
  3. Step 3: Cross multiply
    812,167.60x = 1,120,415.88 × 525,780.40
  4. Step 4: Simplify right side
    812,167.60x = 589,092,709,552.75
  5. Step 5: Solve for x
    x = 589,092,709,552.75/812,167.60
  6. Step 6: Final answer
    x = 725,333.92

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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.