Home / 638,893,945.31-881,713,965.80-360,333,830.75

Finding the Fourth Proportional to 638,893,945.31, 881,713,965.80 and 360,333,830.75

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Solution

The fourth proportional to 638,893,945.31, 881,713,965.80 and 360,333,830.75 is: 497,283,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,893,945.31 : 881,713,965.80 = 360,333,830.75 : x
  2. Step 2: Convert to fraction form
    638,893,945.31/881,713,965.80 = 360,333,830.75/x
  3. Step 3: Cross multiply
    638,893,945.31x = 881,713,965.80 × 360,333,830.75
  4. Step 4: Simplify right side
    638,893,945.31x = 317,711,370,918,980,736
  5. Step 5: Solve for x
    x = 317,711,370,918,980,736/638,893,945.31
  6. Step 6: Final answer
    x = 497,283,427.48

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Double scale
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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.