Home / 678,484.73-1,017,010.68-518,211.63

Finding the Fourth Proportional to 678,484.73, 1,017,010.68 and 518,211.63

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Solution

The fourth proportional to 678,484.73, 1,017,010.68 and 518,211.63 is: 776,770.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,484.73 : 1,017,010.68 = 518,211.63 : x
  2. Step 2: Convert to fraction form
    678,484.73/1,017,010.68 = 518,211.63/x
  3. Step 3: Cross multiply
    678,484.73x = 1,017,010.68 × 518,211.63
  4. Step 4: Simplify right side
    678,484.73x = 527,026,760,266.92
  5. Step 5: Solve for x
    x = 527,026,760,266.92/678,484.73
  6. Step 6: Final answer
    x = 776,770.26

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1.5x scale

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.