Home / 645,100.60-890,292.66-358,647.34

Finding the Fourth Proportional to 645,100.60, 890,292.66 and 358,647.34

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Solution

The fourth proportional to 645,100.60, 890,292.66 and 358,647.34 is: 494,963.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,100.60 : 890,292.66 = 358,647.34 : x
  2. Step 2: Convert to fraction form
    645,100.60/890,292.66 = 358,647.34/x
  3. Step 3: Cross multiply
    645,100.60x = 890,292.66 × 358,647.34
  4. Step 4: Simplify right side
    645,100.60x = 319,301,094,330.52
  5. Step 5: Solve for x
    x = 319,301,094,330.52/645,100.60
  6. Step 6: Final answer
    x = 494,963.26

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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.