Home / 1,178,893,925.96-1,626,878,675.64-643,057,268.12

Finding the Fourth Proportional to 1,178,893,925.96, 1,626,878,675.64 and 643,057,268.12

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Solution

The fourth proportional to 1,178,893,925.96, 1,626,878,675.64 and 643,057,268.12 is: 887,421,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,893,925.96 : 1,626,878,675.64 = 643,057,268.12 : x
  2. Step 2: Convert to fraction form
    1,178,893,925.96/1,626,878,675.64 = 643,057,268.12/x
  3. Step 3: Cross multiply
    1,178,893,925.96x = 1,626,878,675.64 × 643,057,268.12
  4. Step 4: Simplify right side
    1,178,893,925.96x = 1,046,176,156,719,742,080
  5. Step 5: Solve for x
    x = 1,046,176,156,719,742,080/1,178,893,925.96
  6. Step 6: Final answer
    x = 887,421,788.92

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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.