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Finding the Fourth Proportional to 649,406.64, 896,103.54 and 358,979.08

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Solution

The fourth proportional to 649,406.64, 896,103.54 and 358,979.08 is: 495,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,406.64 : 896,103.54 = 358,979.08 : x
  2. Step 2: Convert to fraction form
    649,406.64/896,103.54 = 358,979.08/x
  3. Step 3: Cross multiply
    649,406.64x = 896,103.54 × 358,979.08
  4. Step 4: Simplify right side
    649,406.64x = 321,682,424,068.18
  5. Step 5: Solve for x
    x = 321,682,424,068.18/649,406.64
  6. Step 6: Final answer
    x = 495,348.22

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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.