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Finding the Fourth Proportional to 868,973,782.60, 1,301,760,062.70 and 522,899,403.40

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Solution

The fourth proportional to 868,973,782.60, 1,301,760,062.70 and 522,899,403.40 is: 783,325,773.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,973,782.60 : 1,301,760,062.70 = 522,899,403.40 : x
  2. Step 2: Convert to fraction form
    868,973,782.60/1,301,760,062.70 = 522,899,403.40/x
  3. Step 3: Cross multiply
    868,973,782.60x = 1,301,760,062.70 × 522,899,403.40
  4. Step 4: Simplify right side
    868,973,782.60x = 680,689,560,155,776,640
  5. Step 5: Solve for x
    x = 680,689,560,155,776,640/868,973,782.60
  6. Step 6: Final answer
    x = 783,325,773.21

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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.