Home / 423,447,539.40-634,880,000.70-215,784,016.20

Finding the Fourth Proportional to 423,447,539.40, 634,880,000.70 and 215,784,016.20

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Solution

The fourth proportional to 423,447,539.40, 634,880,000.70 and 215,784,016.20 is: 323,527,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,447,539.40 : 634,880,000.70 = 215,784,016.20 : x
  2. Step 2: Convert to fraction form
    423,447,539.40/634,880,000.70 = 215,784,016.20/x
  3. Step 3: Cross multiply
    423,447,539.40x = 634,880,000.70 × 215,784,016.20
  4. Step 4: Simplify right side
    423,447,539.40x = 136,996,956,356,104,816
  5. Step 5: Solve for x
    x = 136,996,956,356,104,816/423,447,539.40
  6. Step 6: Final answer
    x = 323,527,576.88

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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.