Home / 675,428.25-1,011,518.96-386,363.51

Finding the Fourth Proportional to 675,428.25, 1,011,518.96 and 386,363.51

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Solution

The fourth proportional to 675,428.25, 1,011,518.96 and 386,363.51 is: 578,616.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,428.25 : 1,011,518.96 = 386,363.51 : x
  2. Step 2: Convert to fraction form
    675,428.25/1,011,518.96 = 386,363.51/x
  3. Step 3: Cross multiply
    675,428.25x = 1,011,518.96 × 386,363.51
  4. Step 4: Simplify right side
    675,428.25x = 390,814,013,035.98
  5. Step 5: Solve for x
    x = 390,814,013,035.98/675,428.25
  6. Step 6: Final answer
    x = 578,616.62

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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.