Home / 639,147,515.40-956,705,733.90-618,992,123.40

Finding the Fourth Proportional to 639,147,515.40, 956,705,733.90 and 618,992,123.40

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Solution

The fourth proportional to 639,147,515.40, 956,705,733.90 and 618,992,123.40 is: 926,536,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,147,515.40 : 956,705,733.90 = 618,992,123.40 : x
  2. Step 2: Convert to fraction form
    639,147,515.40/956,705,733.90 = 618,992,123.40/x
  3. Step 3: Cross multiply
    639,147,515.40x = 956,705,733.90 × 618,992,123.40
  4. Step 4: Simplify right side
    639,147,515.40x = 592,193,313,695,716,352
  5. Step 5: Solve for x
    x = 592,193,313,695,716,352/639,147,515.40
  6. Step 6: Final answer
    x = 926,536,205.53

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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.