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Finding the Fourth Proportional to 637,289.40, 955,703.70 and 321,641.40

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Solution

The fourth proportional to 637,289.40, 955,703.70 and 321,641.40 is: 482,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,289.40 : 955,703.70 = 321,641.40 : x
  2. Step 2: Convert to fraction form
    637,289.40/955,703.70 = 321,641.40/x
  3. Step 3: Cross multiply
    637,289.40x = 955,703.70 × 321,641.40
  4. Step 4: Simplify right side
    637,289.40x = 307,393,876,053.18
  5. Step 5: Solve for x
    x = 307,393,876,053.18/637,289.40
  6. Step 6: Final answer
    x = 482,345.82

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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.