Home / 645,737.52-890,746.69-403,599.86

Finding the Fourth Proportional to 645,737.52, 890,746.69 and 403,599.86

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Solution

The fourth proportional to 645,737.52, 890,746.69 and 403,599.86 is: 556,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,737.52 : 890,746.69 = 403,599.86 : x
  2. Step 2: Convert to fraction form
    645,737.52/890,746.69 = 403,599.86/x
  3. Step 3: Cross multiply
    645,737.52x = 890,746.69 × 403,599.86
  4. Step 4: Simplify right side
    645,737.52x = 359,505,239,379.46
  5. Step 5: Solve for x
    x = 359,505,239,379.46/645,737.52
  6. Step 6: Final answer
    x = 556,735.87

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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.