Home / 645,322.14-890,545.30-358,836.08

Finding the Fourth Proportional to 645,322.14, 890,545.30 and 358,836.08

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Solution

The fourth proportional to 645,322.14, 890,545.30 and 358,836.08 is: 495,194.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,322.14 : 890,545.30 = 358,836.08 : x
  2. Step 2: Convert to fraction form
    645,322.14/890,545.30 = 358,836.08/x
  3. Step 3: Cross multiply
    645,322.14x = 890,545.30 × 358,836.08
  4. Step 4: Simplify right side
    645,322.14x = 319,559,784,514.42
  5. Step 5: Solve for x
    x = 319,559,784,514.42/645,322.14
  6. Step 6: Final answer
    x = 495,194.21

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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.