Home / 1,240,802.72-1,711,871.70-811,334.24

Finding the Fourth Proportional to 1,240,802.72, 1,711,871.70 and 811,334.24

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Solution

The fourth proportional to 1,240,802.72, 1,711,871.70 and 811,334.24 is: 1,119,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,802.72 : 1,711,871.70 = 811,334.24 : x
  2. Step 2: Convert to fraction form
    1,240,802.72/1,711,871.70 = 811,334.24/x
  3. Step 3: Cross multiply
    1,240,802.72x = 1,711,871.70 × 811,334.24
  4. Step 4: Simplify right side
    1,240,802.72x = 1,388,900,124,697.01
  5. Step 5: Solve for x
    x = 1,388,900,124,697.01/1,240,802.72
  6. Step 6: Final answer
    x = 1,119,356.13

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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.