Home / 909,720,913.40-1,360,990,965.04-689,027,997.66

Finding the Fourth Proportional to 909,720,913.40, 1,360,990,965.04 and 689,027,997.66

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Solution

The fourth proportional to 909,720,913.40, 1,360,990,965.04 and 689,027,997.66 is: 1,030,822,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,720,913.40 : 1,360,990,965.04 = 689,027,997.66 : x
  2. Step 2: Convert to fraction form
    909,720,913.40/1,360,990,965.04 = 689,027,997.66/x
  3. Step 3: Cross multiply
    909,720,913.40x = 1,360,990,965.04 × 689,027,997.66
  4. Step 4: Simplify right side
    909,720,913.40x = 937,760,879,471,894,656
  5. Step 5: Solve for x
    x = 937,760,879,471,894,656/909,720,913.40
  6. Step 6: Final answer
    x = 1,030,822,602.46

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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.