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Finding the Fourth Proportional to 424,783.36, 636,920.57 and 288,174.22

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Solution

The fourth proportional to 424,783.36, 636,920.57 and 288,174.22 is: 432,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,783.36 : 636,920.57 = 288,174.22 : x
  2. Step 2: Convert to fraction form
    424,783.36/636,920.57 = 288,174.22/x
  3. Step 3: Cross multiply
    424,783.36x = 636,920.57 × 288,174.22
  4. Step 4: Simplify right side
    424,783.36x = 183,544,090,129.72
  5. Step 5: Solve for x
    x = 183,544,090,129.72/424,783.36
  6. Step 6: Final answer
    x = 432,088.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.