Home / 9,989,442.03-13,785,430.05-5,405,763.45

Finding the Fourth Proportional to 9,989,442.03, 13,785,430.05 and 5,405,763.45

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Solution

The fourth proportional to 9,989,442.03, 13,785,430.05 and 5,405,763.45 is: 7,459,953.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,442.03 : 13,785,430.05 = 5,405,763.45 : x
  2. Step 2: Convert to fraction form
    9,989,442.03/13,785,430.05 = 5,405,763.45/x
  3. Step 3: Cross multiply
    9,989,442.03x = 13,785,430.05 × 5,405,763.45
  4. Step 4: Simplify right side
    9,989,442.03x = 74,520,773,906,821.67
  5. Step 5: Solve for x
    x = 74,520,773,906,821.67/9,989,442.03
  6. Step 6: Final answer
    x = 7,459,953.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.