Home / 717,853,038.56-990,641,511.76-400,333,330.36

Finding the Fourth Proportional to 717,853,038.56, 990,641,511.76 and 400,333,330.36

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Solution

The fourth proportional to 717,853,038.56, 990,641,511.76 and 400,333,330.36 is: 552,462,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,853,038.56 : 990,641,511.76 = 400,333,330.36 : x
  2. Step 2: Convert to fraction form
    717,853,038.56/990,641,511.76 = 400,333,330.36/x
  3. Step 3: Cross multiply
    717,853,038.56x = 990,641,511.76 × 400,333,330.36
  4. Step 4: Simplify right side
    717,853,038.56x = 396,586,815,595,745,920
  5. Step 5: Solve for x
    x = 396,586,815,595,745,920/717,853,038.56
  6. Step 6: Final answer
    x = 552,462,404.27

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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.