Home / 1,218,032,585.60-1,680,839,959.01-661,103,675.24

Finding the Fourth Proportional to 1,218,032,585.60, 1,680,839,959.01 and 661,103,675.24

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Solution

The fourth proportional to 1,218,032,585.60, 1,680,839,959.01 and 661,103,675.24 is: 912,298,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,585.60 : 1,680,839,959.01 = 661,103,675.24 : x
  2. Step 2: Convert to fraction form
    1,218,032,585.60/1,680,839,959.01 = 661,103,675.24/x
  3. Step 3: Cross multiply
    1,218,032,585.60x = 1,680,839,959.01 × 661,103,675.24
  4. Step 4: Simplify right side
    1,218,032,585.60x = 1,111,209,474,380,052,352
  5. Step 5: Solve for x
    x = 1,111,209,474,380,052,352/1,218,032,585.60
  6. Step 6: Final answer
    x = 912,298,642.52

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Double scale
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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.