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Finding the Fourth Proportional to 439,807.79, 607,000.03 and 278,677.94

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Solution

The fourth proportional to 439,807.79, 607,000.03 and 278,677.94 is: 384,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,807.79 : 607,000.03 = 278,677.94 : x
  2. Step 2: Convert to fraction form
    439,807.79/607,000.03 = 278,677.94/x
  3. Step 3: Cross multiply
    439,807.79x = 607,000.03 × 278,677.94
  4. Step 4: Simplify right side
    439,807.79x = 169,157,514,208.64
  5. Step 5: Solve for x
    x = 169,157,514,208.64/439,807.79
  6. Step 6: Final answer
    x = 384,616.91

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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.