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Finding the Fourth Proportional to 710,162.70, 980,029.89 and 387,866.94

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Solution

The fourth proportional to 710,162.70, 980,029.89 and 387,866.94 is: 535,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,162.70 : 980,029.89 = 387,866.94 : x
  2. Step 2: Convert to fraction form
    710,162.70/980,029.89 = 387,866.94/x
  3. Step 3: Cross multiply
    710,162.70x = 980,029.89 × 387,866.94
  4. Step 4: Simplify right side
    710,162.70x = 380,121,194,542.84
  5. Step 5: Solve for x
    x = 380,121,194,542.84/710,162.70
  6. Step 6: Final answer
    x = 535,259.31

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1.5x scale

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.