Home / 987,146.49-1,480,425.45-418,518.45

Finding the Fourth Proportional to 987,146.49, 1,480,425.45 and 418,518.45

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Solution

The fourth proportional to 987,146.49, 1,480,425.45 and 418,518.45 is: 627,652.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,146.49 : 1,480,425.45 = 418,518.45 : x
  2. Step 2: Convert to fraction form
    987,146.49/1,480,425.45 = 418,518.45/x
  3. Step 3: Cross multiply
    987,146.49x = 1,480,425.45 × 418,518.45
  4. Step 4: Simplify right side
    987,146.49x = 619,585,364,674.55
  5. Step 5: Solve for x
    x = 619,585,364,674.55/987,146.49
  6. Step 6: Final answer
    x = 627,652.91

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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.