Home / 645,332.33-890,580.22-354,956.18

Finding the Fourth Proportional to 645,332.33, 890,580.22 and 354,956.18

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Solution

The fourth proportional to 645,332.33, 890,580.22 and 354,956.18 is: 489,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,332.33 : 890,580.22 = 354,956.18 : x
  2. Step 2: Convert to fraction form
    645,332.33/890,580.22 = 354,956.18/x
  3. Step 3: Cross multiply
    645,332.33x = 890,580.22 × 354,956.18
  4. Step 4: Simplify right side
    645,332.33x = 316,116,947,534.47
  5. Step 5: Solve for x
    x = 316,116,947,534.47/645,332.33
  6. Step 6: Final answer
    x = 489,851.40

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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.