Home / 645,127.39-890,225.36-358,630.03

Finding the Fourth Proportional to 645,127.39, 890,225.36 and 358,630.03

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Solution

The fourth proportional to 645,127.39, 890,225.36 and 358,630.03 is: 494,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,127.39 : 890,225.36 = 358,630.03 : x
  2. Step 2: Convert to fraction form
    645,127.39/890,225.36 = 358,630.03/x
  3. Step 3: Cross multiply
    645,127.39x = 890,225.36 × 358,630.03
  4. Step 4: Simplify right side
    645,127.39x = 319,261,543,112.43
  5. Step 5: Solve for x
    x = 319,261,543,112.43/645,127.39
  6. Step 6: Final answer
    x = 494,881.40

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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.