Home / 687,555.80-1,031,333.70-545,838.20

Finding the Fourth Proportional to 687,555.80, 1,031,333.70 and 545,838.20

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Solution

The fourth proportional to 687,555.80, 1,031,333.70 and 545,838.20 is: 818,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,555.80 : 1,031,333.70 = 545,838.20 : x
  2. Step 2: Convert to fraction form
    687,555.80/1,031,333.70 = 545,838.20/x
  3. Step 3: Cross multiply
    687,555.80x = 1,031,333.70 × 545,838.20
  4. Step 4: Simplify right side
    687,555.80x = 562,941,330,407.34
  5. Step 5: Solve for x
    x = 562,941,330,407.34/687,555.80
  6. Step 6: Final answer
    x = 818,757.30

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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.