Home / 645,333.64-890,582.06-354,957.48

Finding the Fourth Proportional to 645,333.64, 890,582.06 and 354,957.48

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Solution

The fourth proportional to 645,333.64, 890,582.06 and 354,957.48 is: 489,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,333.64 : 890,582.06 = 354,957.48 : x
  2. Step 2: Convert to fraction form
    645,333.64/890,582.06 = 354,957.48/x
  3. Step 3: Cross multiply
    645,333.64x = 890,582.06 × 354,957.48
  4. Step 4: Simplify right side
    645,333.64x = 316,118,763,750.81
  5. Step 5: Solve for x
    x = 316,118,763,750.81/645,333.64
  6. Step 6: Final answer
    x = 489,853.22

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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.