Home / 687,511.20-1,031,266.80-477,559.20

Finding the Fourth Proportional to 687,511.20, 1,031,266.80 and 477,559.20

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Solution

The fourth proportional to 687,511.20, 1,031,266.80 and 477,559.20 is: 716,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,511.20 : 1,031,266.80 = 477,559.20 : x
  2. Step 2: Convert to fraction form
    687,511.20/1,031,266.80 = 477,559.20/x
  3. Step 3: Cross multiply
    687,511.20x = 1,031,266.80 × 477,559.20
  4. Step 4: Simplify right side
    687,511.20x = 492,490,947,994.56
  5. Step 5: Solve for x
    x = 492,490,947,994.56/687,511.20
  6. Step 6: Final answer
    x = 716,338.80

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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.