Home / 645,159.71-890,222.72-369,474.69

Finding the Fourth Proportional to 645,159.71, 890,222.72 and 369,474.69

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Solution

The fourth proportional to 645,159.71, 890,222.72 and 369,474.69 is: 509,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,159.71 : 890,222.72 = 369,474.69 : x
  2. Step 2: Convert to fraction form
    645,159.71/890,222.72 = 369,474.69/x
  3. Step 3: Cross multiply
    645,159.71x = 890,222.72 × 369,474.69
  4. Step 4: Simplify right side
    645,159.71x = 328,914,763,502.96
  5. Step 5: Solve for x
    x = 328,914,763,502.96/645,159.71
  6. Step 6: Final answer
    x = 509,819.13

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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.