Home / 645,244.49-890,419.07-358,759.37

Finding the Fourth Proportional to 645,244.49, 890,419.07 and 358,759.37

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Solution

The fourth proportional to 645,244.49, 890,419.07 and 358,759.37 is: 495,077.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,244.49 : 890,419.07 = 358,759.37 : x
  2. Step 2: Convert to fraction form
    645,244.49/890,419.07 = 358,759.37/x
  3. Step 3: Cross multiply
    645,244.49x = 890,419.07 × 358,759.37
  4. Step 4: Simplify right side
    645,244.49x = 319,446,178,343.29
  5. Step 5: Solve for x
    x = 319,446,178,343.29/645,244.49
  6. Step 6: Final answer
    x = 495,077.74

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1.5x scale

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.