Home / 802,315.40-1,107,050.10-515,769.80

Finding the Fourth Proportional to 802,315.40, 1,107,050.10 and 515,769.80

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Solution

The fourth proportional to 802,315.40, 1,107,050.10 and 515,769.80 is: 711,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,315.40 : 1,107,050.10 = 515,769.80 : x
  2. Step 2: Convert to fraction form
    802,315.40/1,107,050.10 = 515,769.80/x
  3. Step 3: Cross multiply
    802,315.40x = 1,107,050.10 × 515,769.80
  4. Step 4: Simplify right side
    802,315.40x = 570,983,008,666.98
  5. Step 5: Solve for x
    x = 570,983,008,666.98/802,315.40
  6. Step 6: Final answer
    x = 711,669.01

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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.