Home / 678,665.28-1,017,649.80-358,989.66

Finding the Fourth Proportional to 678,665.28, 1,017,649.80 and 358,989.66

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Solution

The fourth proportional to 678,665.28, 1,017,649.80 and 358,989.66 is: 538,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,665.28 : 1,017,649.80 = 358,989.66 : x
  2. Step 2: Convert to fraction form
    678,665.28/1,017,649.80 = 358,989.66/x
  3. Step 3: Cross multiply
    678,665.28x = 1,017,649.80 × 358,989.66
  4. Step 4: Simplify right side
    678,665.28x = 365,325,755,701.07
  5. Step 5: Solve for x
    x = 365,325,755,701.07/678,665.28
  6. Step 6: Final answer
    x = 538,300.35

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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.