Home / 839,813,999.70-1,259,720,999.55-531,436,502.10

Finding the Fourth Proportional to 839,813,999.70, 1,259,720,999.55 and 531,436,502.10

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Solution

The fourth proportional to 839,813,999.70, 1,259,720,999.55 and 531,436,502.10 is: 797,154,753.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,813,999.70 : 1,259,720,999.55 = 531,436,502.10 : x
  2. Step 2: Convert to fraction form
    839,813,999.70/1,259,720,999.55 = 531,436,502.10/x
  3. Step 3: Cross multiply
    839,813,999.70x = 1,259,720,999.55 × 531,436,502.10
  4. Step 4: Simplify right side
    839,813,999.70x = 669,461,721,622,767,616
  5. Step 5: Solve for x
    x = 669,461,721,622,767,616/839,813,999.70
  6. Step 6: Final answer
    x = 797,154,753.15

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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.