Home / 905,418,021.60-1,358,127,032.40-869,705,186.40

Finding the Fourth Proportional to 905,418,021.60, 1,358,127,032.40 and 869,705,186.40

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Solution

The fourth proportional to 905,418,021.60, 1,358,127,032.40 and 869,705,186.40 is: 1,304,557,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,418,021.60 : 1,358,127,032.40 = 869,705,186.40 : x
  2. Step 2: Convert to fraction form
    905,418,021.60/1,358,127,032.40 = 869,705,186.40/x
  3. Step 3: Cross multiply
    905,418,021.60x = 1,358,127,032.40 × 869,705,186.40
  4. Step 4: Simplify right side
    905,418,021.60x = 1,181,170,123,868,320,768
  5. Step 5: Solve for x
    x = 1,181,170,123,868,320,768/905,418,021.60
  6. Step 6: Final answer
    x = 1,304,557,779.60

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Double scale
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1.5x scale

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.