Home / 687,539.80-1,031,309.70-545,822.20

Finding the Fourth Proportional to 687,539.80, 1,031,309.70 and 545,822.20

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Solution

The fourth proportional to 687,539.80, 1,031,309.70 and 545,822.20 is: 818,733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,539.80 : 1,031,309.70 = 545,822.20 : x
  2. Step 2: Convert to fraction form
    687,539.80/1,031,309.70 = 545,822.20/x
  3. Step 3: Cross multiply
    687,539.80x = 1,031,309.70 × 545,822.20
  4. Step 4: Simplify right side
    687,539.80x = 562,911,729,335.34
  5. Step 5: Solve for x
    x = 562,911,729,335.34/687,539.80
  6. Step 6: Final answer
    x = 818,733.30

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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.