Home / 877,651.20-1,211,095.80-515,089.80

Finding the Fourth Proportional to 877,651.20, 1,211,095.80 and 515,089.80

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Solution

The fourth proportional to 877,651.20, 1,211,095.80 and 515,089.80 is: 710,787.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,651.20 : 1,211,095.80 = 515,089.80 : x
  2. Step 2: Convert to fraction form
    877,651.20/1,211,095.80 = 515,089.80/x
  3. Step 3: Cross multiply
    877,651.20x = 1,211,095.80 × 515,089.80
  4. Step 4: Simplify right side
    877,651.20x = 623,823,093,402.84
  5. Step 5: Solve for x
    x = 623,823,093,402.84/877,651.20
  6. Step 6: Final answer
    x = 710,787.03

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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.