Home / 991,831.80-1,487,747.70-518,662.20

Finding the Fourth Proportional to 991,831.80, 1,487,747.70 and 518,662.20

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Solution

The fourth proportional to 991,831.80, 1,487,747.70 and 518,662.20 is: 777,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,831.80 : 1,487,747.70 = 518,662.20 : x
  2. Step 2: Convert to fraction form
    991,831.80/1,487,747.70 = 518,662.20/x
  3. Step 3: Cross multiply
    991,831.80x = 1,487,747.70 × 518,662.20
  4. Step 4: Simplify right side
    991,831.80x = 771,638,495,126.94
  5. Step 5: Solve for x
    x = 771,638,495,126.94/991,831.80
  6. Step 6: Final answer
    x = 777,993.30

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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.