Home / 638,893,966.68-881,713,995.30-360,333,852.12

Finding the Fourth Proportional to 638,893,966.68, 881,713,995.30 and 360,333,852.12

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Solution

The fourth proportional to 638,893,966.68, 881,713,995.30 and 360,333,852.12 is: 497,283,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,893,966.68 : 881,713,995.30 = 360,333,852.12 : x
  2. Step 2: Convert to fraction form
    638,893,966.68/881,713,995.30 = 360,333,852.12/x
  3. Step 3: Cross multiply
    638,893,966.68x = 881,713,995.30 × 360,333,852.12
  4. Step 4: Simplify right side
    638,893,966.68x = 317,711,400,394,564,544
  5. Step 5: Solve for x
    x = 317,711,400,394,564,544/638,893,966.68
  6. Step 6: Final answer
    x = 497,283,456.98

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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.