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Finding the Fourth Proportional to 871,258,688.10, 1,306,888,032.15 and 673,987,788.90

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Solution

The fourth proportional to 871,258,688.10, 1,306,888,032.15 and 673,987,788.90 is: 1,010,981,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,258,688.10 : 1,306,888,032.15 = 673,987,788.90 : x
  2. Step 2: Convert to fraction form
    871,258,688.10/1,306,888,032.15 = 673,987,788.90/x
  3. Step 3: Cross multiply
    871,258,688.10x = 1,306,888,032.15 × 673,987,788.90
  4. Step 4: Simplify right side
    871,258,688.10x = 880,826,575,128,650,624
  5. Step 5: Solve for x
    x = 880,826,575,128,650,624/871,258,688.10
  6. Step 6: Final answer
    x = 1,010,981,683.35

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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.