Home / 389,391,772,614.45-537,363,801,322.40-215,779,812,045.07

Finding the Fourth Proportional to 389,391,772,614.45, 537,363,801,322.40 and 215,779,812,045.07

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Solution

The fourth proportional to 389,391,772,614.45, 537,363,801,322.40 and 215,779,812,045.07 is: 297,777,889,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,391,772,614.45 : 537,363,801,322.40 = 215,779,812,045.07 : x
  2. Step 2: Convert to fraction form
    389,391,772,614.45/537,363,801,322.40 = 215,779,812,045.07/x
  3. Step 3: Cross multiply
    389,391,772,614.45x = 537,363,801,322.40 × 215,779,812,045.07
  4. Step 4: Simplify right side
    389,391,772,614.45x = 115,952,260,049,171,816,382,464
  5. Step 5: Solve for x
    x = 115,952,260,049,171,816,382,464/389,391,772,614.45
  6. Step 6: Final answer
    x = 297,777,889,015.60

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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.