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Finding the Fourth Proportional to 657,007.70, 985,900.35 and 433,015.70

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Solution

The fourth proportional to 657,007.70, 985,900.35 and 433,015.70 is: 649,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,007.70 : 985,900.35 = 433,015.70 : x
  2. Step 2: Convert to fraction form
    657,007.70/985,900.35 = 433,015.70/x
  3. Step 3: Cross multiply
    657,007.70x = 985,900.35 × 433,015.70
  4. Step 4: Simplify right side
    657,007.70x = 426,910,330,185.50
  5. Step 5: Solve for x
    x = 426,910,330,185.50/657,007.70
  6. Step 6: Final answer
    x = 649,779.80

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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.