Home / 784,655.34-1,079,426.58-687,421.32

Finding the Fourth Proportional to 784,655.34, 1,079,426.58 and 687,421.32

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Solution

The fourth proportional to 784,655.34, 1,079,426.58 and 687,421.32 is: 945,664.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,655.34 : 1,079,426.58 = 687,421.32 : x
  2. Step 2: Convert to fraction form
    784,655.34/1,079,426.58 = 687,421.32/x
  3. Step 3: Cross multiply
    784,655.34x = 1,079,426.58 × 687,421.32
  4. Step 4: Simplify right side
    784,655.34x = 742,020,844,466.69
  5. Step 5: Solve for x
    x = 742,020,844,466.69/784,655.34
  6. Step 6: Final answer
    x = 945,664.68

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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.