Home / 840,551.45-1,159,913.72-478,063.49

Finding the Fourth Proportional to 840,551.45, 1,159,913.72 and 478,063.49

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Solution

The fourth proportional to 840,551.45, 1,159,913.72 and 478,063.49 is: 659,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,551.45 : 1,159,913.72 = 478,063.49 : x
  2. Step 2: Convert to fraction form
    840,551.45/1,159,913.72 = 478,063.49/x
  3. Step 3: Cross multiply
    840,551.45x = 1,159,913.72 × 478,063.49
  4. Step 4: Simplify right side
    840,551.45x = 554,512,396,477.67
  5. Step 5: Solve for x
    x = 554,512,396,477.67/840,551.45
  6. Step 6: Final answer
    x = 659,700.72

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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.