Home / 692,226.20-955,271.22-390,420.20

Finding the Fourth Proportional to 692,226.20, 955,271.22 and 390,420.20

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Solution

The fourth proportional to 692,226.20, 955,271.22 and 390,420.20 is: 538,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,226.20 : 955,271.22 = 390,420.20 : x
  2. Step 2: Convert to fraction form
    692,226.20/955,271.22 = 390,420.20/x
  3. Step 3: Cross multiply
    692,226.20x = 955,271.22 × 390,420.20
  4. Step 4: Simplify right side
    692,226.20x = 372,957,180,766.64
  5. Step 5: Solve for x
    x = 372,957,180,766.64/692,226.20
  6. Step 6: Final answer
    x = 538,779.35

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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.