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Finding the Fourth Proportional to 1,260,422,656.90, 1,892,580,404.55 and 687,113,728.90

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Solution

The fourth proportional to 1,260,422,656.90, 1,892,580,404.55 and 687,113,728.90 is: 1,031,731,675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,422,656.90 : 1,892,580,404.55 = 687,113,728.90 : x
  2. Step 2: Convert to fraction form
    1,260,422,656.90/1,892,580,404.55 = 687,113,728.90/x
  3. Step 3: Cross multiply
    1,260,422,656.90x = 1,892,580,404.55 × 687,113,728.90
  4. Step 4: Simplify right side
    1,260,422,656.90x = 1,300,417,979,013,421,056
  5. Step 5: Solve for x
    x = 1,300,417,979,013,421,056/1,260,422,656.90
  6. Step 6: Final answer
    x = 1,031,731,675.00

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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.