Home / 520,378,819,998.72-779,644,778,088.96-217,523,810,227.20

Finding the Fourth Proportional to 520,378,819,998.72, 779,644,778,088.96 and 217,523,810,227.20

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Solution

The fourth proportional to 520,378,819,998.72, 779,644,778,088.96 and 217,523,810,227.20 is: 325,899,702,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,378,819,998.72 : 779,644,778,088.96 = 217,523,810,227.20 : x
  2. Step 2: Convert to fraction form
    520,378,819,998.72/779,644,778,088.96 = 217,523,810,227.20/x
  3. Step 3: Cross multiply
    520,378,819,998.72x = 779,644,778,088.96 × 217,523,810,227.20
  4. Step 4: Simplify right side
    520,378,819,998.72x = 169,591,302,753,650,399,510,528
  5. Step 5: Solve for x
    x = 169,591,302,753,650,399,510,528/520,378,819,998.72
  6. Step 6: Final answer
    x = 325,899,702,747.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.