Home / 840,690,420.48-1,261,155,974.04-258,473,545.02

Finding the Fourth Proportional to 840,690,420.48, 1,261,155,974.04 and 258,473,545.02

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Solution

The fourth proportional to 840,690,420.48, 1,261,155,974.04 and 258,473,545.02 is: 387,747,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,690,420.48 : 1,261,155,974.04 = 258,473,545.02 : x
  2. Step 2: Convert to fraction form
    840,690,420.48/1,261,155,974.04 = 258,473,545.02/x
  3. Step 3: Cross multiply
    840,690,420.48x = 1,261,155,974.04 × 258,473,545.02
  4. Step 4: Simplify right side
    840,690,420.48x = 325,975,455,433,269,888
  5. Step 5: Solve for x
    x = 325,975,455,433,269,888/840,690,420.48
  6. Step 6: Final answer
    x = 387,747,317.55

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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.