Home / 1,240,807.34-1,711,878.08-811,338.86

Finding the Fourth Proportional to 1,240,807.34, 1,711,878.08 and 811,338.86

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Solution

The fourth proportional to 1,240,807.34, 1,711,878.08 and 811,338.86 is: 1,119,362.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,807.34 : 1,711,878.08 = 811,338.86 : x
  2. Step 2: Convert to fraction form
    1,240,807.34/1,711,878.08 = 811,338.86/x
  3. Step 3: Cross multiply
    1,240,807.34x = 1,711,878.08 × 811,338.86
  4. Step 4: Simplify right side
    1,240,807.34x = 1,388,913,209,886.19
  5. Step 5: Solve for x
    x = 1,388,913,209,886.19/1,240,807.34
  6. Step 6: Final answer
    x = 1,119,362.50

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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.