Home / 988,590.30-1,387,175.70-988,590.30

Finding the Fourth Proportional to 988,590.30, 1,387,175.70 and 988,590.30

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Solution

The fourth proportional to 988,590.30, 1,387,175.70 and 988,590.30 is: 1,387,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,590.30 : 1,387,175.70 = 988,590.30 : x
  2. Step 2: Convert to fraction form
    988,590.30/1,387,175.70 = 988,590.30/x
  3. Step 3: Cross multiply
    988,590.30x = 1,387,175.70 × 988,590.30
  4. Step 4: Simplify right side
    988,590.30x = 1,371,348,441,415.71
  5. Step 5: Solve for x
    x = 1,371,348,441,415.71/988,590.30
  6. Step 6: Final answer
    x = 1,387,175.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.