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Finding the Fourth Proportional to 486,571.70, 671,784.90 and 435,495.98

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Solution

The fourth proportional to 486,571.70, 671,784.90 and 435,495.98 is: 601,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,571.70 : 671,784.90 = 435,495.98 : x
  2. Step 2: Convert to fraction form
    486,571.70/671,784.90 = 435,495.98/x
  3. Step 3: Cross multiply
    486,571.70x = 671,784.90 × 435,495.98
  4. Step 4: Simplify right side
    486,571.70x = 292,559,623,374.70
  5. Step 5: Solve for x
    x = 292,559,623,374.70/486,571.70
  6. Step 6: Final answer
    x = 601,267.24

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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.