Home / 989,500.32-1,365,395.13-553,941.45

Finding the Fourth Proportional to 989,500.32, 1,365,395.13 and 553,941.45

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Solution

The fourth proportional to 989,500.32, 1,365,395.13 and 553,941.45 is: 764,374.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,500.32 : 1,365,395.13 = 553,941.45 : x
  2. Step 2: Convert to fraction form
    989,500.32/1,365,395.13 = 553,941.45/x
  3. Step 3: Cross multiply
    989,500.32x = 1,365,395.13 × 553,941.45
  4. Step 4: Simplify right side
    989,500.32x = 756,348,958,135.14
  5. Step 5: Solve for x
    x = 756,348,958,135.14/989,500.32
  6. Step 6: Final answer
    x = 764,374.65

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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.