Home / 1,043,539,813.76-1,440,242,359.03-636,406,720.93

Finding the Fourth Proportional to 1,043,539,813.76, 1,440,242,359.03 and 636,406,720.93

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Solution

The fourth proportional to 1,043,539,813.76, 1,440,242,359.03 and 636,406,720.93 is: 878,337,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043,539,813.76 : 1,440,242,359.03 = 636,406,720.93 : x
  2. Step 2: Convert to fraction form
    1,043,539,813.76/1,440,242,359.03 = 636,406,720.93/x
  3. Step 3: Cross multiply
    1,043,539,813.76x = 1,440,242,359.03 × 636,406,720.93
  4. Step 4: Simplify right side
    1,043,539,813.76x = 916,579,917,052,757,120
  5. Step 5: Solve for x
    x = 916,579,917,052,757,120/1,043,539,813.76
  6. Step 6: Final answer
    x = 878,337,275.65

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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.