Home / 811,403.60-1,119,359.88-525,015.95

Finding the Fourth Proportional to 811,403.60, 1,119,359.88 and 525,015.95

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Solution

The fourth proportional to 811,403.60, 1,119,359.88 and 525,015.95 is: 724,278.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,403.60 : 1,119,359.88 = 525,015.95 : x
  2. Step 2: Convert to fraction form
    811,403.60/1,119,359.88 = 525,015.95/x
  3. Step 3: Cross multiply
    811,403.60x = 1,119,359.88 × 525,015.95
  4. Step 4: Simplify right side
    811,403.60x = 587,681,785,193.29
  5. Step 5: Solve for x
    x = 587,681,785,193.29/811,403.60
  6. Step 6: Final answer
    x = 724,278.02

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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.