Home / 1,345,677.28-2,018,905.53-399,070.78

Finding the Fourth Proportional to 1,345,677.28, 2,018,905.53 and 399,070.78

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Solution

The fourth proportional to 1,345,677.28, 2,018,905.53 and 399,070.78 is: 598,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,677.28 : 2,018,905.53 = 399,070.78 : x
  2. Step 2: Convert to fraction form
    1,345,677.28/2,018,905.53 = 399,070.78/x
  3. Step 3: Cross multiply
    1,345,677.28x = 2,018,905.53 × 399,070.78
  4. Step 4: Simplify right side
    1,345,677.28x = 805,686,204,603.41
  5. Step 5: Solve for x
    x = 805,686,204,603.41/1,345,677.28
  6. Step 6: Final answer
    x = 598,721.71

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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.