Home / 698,574,285.70-1,047,861,428.55-620,640,103.30

Finding the Fourth Proportional to 698,574,285.70, 1,047,861,428.55 and 620,640,103.30

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Solution

The fourth proportional to 698,574,285.70, 1,047,861,428.55 and 620,640,103.30 is: 930,960,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,574,285.70 : 1,047,861,428.55 = 620,640,103.30 : x
  2. Step 2: Convert to fraction form
    698,574,285.70/1,047,861,428.55 = 620,640,103.30/x
  3. Step 3: Cross multiply
    698,574,285.70x = 1,047,861,428.55 × 620,640,103.30
  4. Step 4: Simplify right side
    698,574,285.70x = 650,344,825,259,357,440
  5. Step 5: Solve for x
    x = 650,344,825,259,357,440/698,574,285.70
  6. Step 6: Final answer
    x = 930,960,154.95

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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.