Home / 487,610,614.56-672,867,712.08-278,775,559.20

Finding the Fourth Proportional to 487,610,614.56, 672,867,712.08 and 278,775,559.20

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Solution

The fourth proportional to 487,610,614.56, 672,867,712.08 and 278,775,559.20 is: 384,690,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,610,614.56 : 672,867,712.08 = 278,775,559.20 : x
  2. Step 2: Convert to fraction form
    487,610,614.56/672,867,712.08 = 278,775,559.20/x
  3. Step 3: Cross multiply
    487,610,614.56x = 672,867,712.08 × 278,775,559.20
  4. Step 4: Simplify right side
    487,610,614.56x = 187,579,072,702,726,592
  5. Step 5: Solve for x
    x = 187,579,072,702,726,592/487,610,614.56
  6. Step 6: Final answer
    x = 384,690,298.16

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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.