Home / 686,748-1,030,405.50-370,832.88

Finding the Fourth Proportional to 686,748, 1,030,405.50 and 370,832.88

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Solution

The fourth proportional to 686,748, 1,030,405.50 and 370,832.88 is: 556,402.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,748 : 1,030,405.50 = 370,832.88 : x
  2. Step 2: Convert to fraction form
    686,748/1,030,405.50 = 370,832.88/x
  3. Step 3: Cross multiply
    686,748x = 1,030,405.50 × 370,832.88
  4. Step 4: Simplify right side
    686,748x = 382,108,239,132.84
  5. Step 5: Solve for x
    x = 382,108,239,132.84/686,748
  6. Step 6: Final answer
    x = 556,402.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.