Home / 774,990,471.89-1,069,504,495.05-440,410,275.78

Finding the Fourth Proportional to 774,990,471.89, 1,069,504,495.05 and 440,410,275.78

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Solution

The fourth proportional to 774,990,471.89, 1,069,504,495.05 and 440,410,275.78 is: 607,776,207.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,990,471.89 : 1,069,504,495.05 = 440,410,275.78 : x
  2. Step 2: Convert to fraction form
    774,990,471.89/1,069,504,495.05 = 440,410,275.78/x
  3. Step 3: Cross multiply
    774,990,471.89x = 1,069,504,495.05 × 440,410,275.78
  4. Step 4: Simplify right side
    774,990,471.89x = 471,020,769,612,920,064
  5. Step 5: Solve for x
    x = 471,020,769,612,920,064/774,990,471.89
  6. Step 6: Final answer
    x = 607,776,207.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.