Home / 389,391,773,040.92-537,363,801,915.08-215,779,812,471.62

Finding the Fourth Proportional to 389,391,773,040.92, 537,363,801,915.08 and 215,779,812,471.62

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Solution

The fourth proportional to 389,391,773,040.92, 537,363,801,915.08 and 215,779,812,471.62 is: 297,777,889,606.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,391,773,040.92 : 537,363,801,915.08 = 215,779,812,471.62 : x
  2. Step 2: Convert to fraction form
    389,391,773,040.92/537,363,801,915.08 = 215,779,812,471.62/x
  3. Step 3: Cross multiply
    389,391,773,040.92x = 537,363,801,915.08 × 215,779,812,471.62
  4. Step 4: Simplify right side
    389,391,773,040.92x = 115,952,260,406,272,711,458,816
  5. Step 5: Solve for x
    x = 115,952,260,406,272,711,458,816/389,391,773,040.92
  6. Step 6: Final answer
    x = 297,777,889,606.54

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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.