Home / 1,260,420,866.40-1,892,577,718.80-687,111,938.40

Finding the Fourth Proportional to 1,260,420,866.40, 1,892,577,718.80 and 687,111,938.40

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Solution

The fourth proportional to 1,260,420,866.40, 1,892,577,718.80 and 687,111,938.40 is: 1,031,728,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,420,866.40 : 1,892,577,718.80 = 687,111,938.40 : x
  2. Step 2: Convert to fraction form
    1,260,420,866.40/1,892,577,718.80 = 687,111,938.40/x
  3. Step 3: Cross multiply
    1,260,420,866.40x = 1,892,577,718.80 × 687,111,938.40
  4. Step 4: Simplify right side
    1,260,420,866.40x = 1,300,412,744,937,318,144
  5. Step 5: Solve for x
    x = 1,300,412,744,937,318,144/1,260,420,866.40
  6. Step 6: Final answer
    x = 1,031,728,987.99

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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.