Home / 515,560.80-772,466.40-426,331.20

Finding the Fourth Proportional to 515,560.80, 772,466.40 and 426,331.20

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Solution

The fourth proportional to 515,560.80, 772,466.40 and 426,331.20 is: 638,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,560.80 : 772,466.40 = 426,331.20 : x
  2. Step 2: Convert to fraction form
    515,560.80/772,466.40 = 426,331.20/x
  3. Step 3: Cross multiply
    515,560.80x = 772,466.40 × 426,331.20
  4. Step 4: Simplify right side
    515,560.80x = 329,326,527,271.68
  5. Step 5: Solve for x
    x = 329,326,527,271.68/515,560.80
  6. Step 6: Final answer
    x = 638,773.40

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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.