Home / 1,240,809.34-1,711,880.85-811,340.86

Finding the Fourth Proportional to 1,240,809.34, 1,711,880.85 and 811,340.86

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Solution

The fourth proportional to 1,240,809.34, 1,711,880.85 and 811,340.86 is: 1,119,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,809.34 : 1,711,880.85 = 811,340.86 : x
  2. Step 2: Convert to fraction form
    1,240,809.34/1,711,880.85 = 811,340.86/x
  3. Step 3: Cross multiply
    1,240,809.34x = 1,711,880.85 × 811,340.86
  4. Step 4: Simplify right side
    1,240,809.34x = 1,388,918,881,056.53
  5. Step 5: Solve for x
    x = 1,388,918,881,056.53/1,240,809.34
  6. Step 6: Final answer
    x = 1,119,365.27

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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.