Home / 515,040,941.20-772,561,411.80-494,952,471.40

Finding the Fourth Proportional to 515,040,941.20, 772,561,411.80 and 494,952,471.40

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Solution

The fourth proportional to 515,040,941.20, 772,561,411.80 and 494,952,471.40 is: 742,428,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,040,941.20 : 772,561,411.80 = 494,952,471.40 : x
  2. Step 2: Convert to fraction form
    515,040,941.20/772,561,411.80 = 494,952,471.40/x
  3. Step 3: Cross multiply
    515,040,941.20x = 772,561,411.80 × 494,952,471.40
  4. Step 4: Simplify right side
    515,040,941.20x = 382,381,180,078,683,072
  5. Step 5: Solve for x
    x = 382,381,180,078,683,072/515,040,941.20
  6. Step 6: Final answer
    x = 742,428,707.10

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Double scale
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Similar ratio
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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.