Home / 645,127.77-890,306.70-358,652.64

Finding the Fourth Proportional to 645,127.77, 890,306.70 and 358,652.64

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Solution

The fourth proportional to 645,127.77, 890,306.70 and 358,652.64 is: 494,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,127.77 : 890,306.70 = 358,652.64 : x
  2. Step 2: Convert to fraction form
    645,127.77/890,306.70 = 358,652.64/x
  3. Step 3: Cross multiply
    645,127.77x = 890,306.70 × 358,652.64
  4. Step 4: Simplify right side
    645,127.77x = 319,310,848,364.69
  5. Step 5: Solve for x
    x = 319,310,848,364.69/645,127.77
  6. Step 6: Final answer
    x = 494,957.53

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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.