Home / 1,218,032,626.14-1,680,840,014.93-661,103,715.78

Finding the Fourth Proportional to 1,218,032,626.14, 1,680,840,014.93 and 661,103,715.78

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Solution

The fourth proportional to 1,218,032,626.14, 1,680,840,014.93 and 661,103,715.78 is: 912,298,698.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,626.14 : 1,680,840,014.93 = 661,103,715.78 : x
  2. Step 2: Convert to fraction form
    1,218,032,626.14/1,680,840,014.93 = 661,103,715.78/x
  3. Step 3: Cross multiply
    1,218,032,626.14x = 1,680,840,014.93 × 661,103,715.78
  4. Step 4: Simplify right side
    1,218,032,626.14x = 1,111,209,579,501,933,696
  5. Step 5: Solve for x
    x = 1,111,209,579,501,933,696/1,218,032,626.14
  6. Step 6: Final answer
    x = 912,298,698.45

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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.