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Finding the Fourth Proportional to 604,711.80, 907,359.30 and 426,835.80

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Solution

The fourth proportional to 604,711.80, 907,359.30 and 426,835.80 is: 640,459.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,711.80 : 907,359.30 = 426,835.80 : x
  2. Step 2: Convert to fraction form
    604,711.80/907,359.30 = 426,835.80/x
  3. Step 3: Cross multiply
    604,711.80x = 907,359.30 × 426,835.80
  4. Step 4: Simplify right side
    604,711.80x = 387,293,432,702.94
  5. Step 5: Solve for x
    x = 387,293,432,702.94/604,711.80
  6. Step 6: Final answer
    x = 640,459.53

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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.