Home / 1,190,098-1,785,143.35-431,938.45

Finding the Fourth Proportional to 1,190,098, 1,785,143.35 and 431,938.45

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Solution

The fourth proportional to 1,190,098, 1,785,143.35 and 431,938.45 is: 647,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,098 : 1,785,143.35 = 431,938.45 : x
  2. Step 2: Convert to fraction form
    1,190,098/1,785,143.35 = 431,938.45/x
  3. Step 3: Cross multiply
    1,190,098x = 1,785,143.35 × 431,938.45
  4. Step 4: Simplify right side
    1,190,098x = 771,072,051,626.81
  5. Step 5: Solve for x
    x = 771,072,051,626.81/1,190,098
  6. Step 6: Final answer
    x = 647,906.35

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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.