Home / 509,408,189.08-702,985,681.54-289,403,687.32

Finding the Fourth Proportional to 509,408,189.08, 702,985,681.54 and 289,403,687.32

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Solution

The fourth proportional to 509,408,189.08, 702,985,681.54 and 289,403,687.32 is: 399,378,440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,408,189.08 : 702,985,681.54 = 289,403,687.32 : x
  2. Step 2: Convert to fraction form
    509,408,189.08/702,985,681.54 = 289,403,687.32/x
  3. Step 3: Cross multiply
    509,408,189.08x = 702,985,681.54 × 289,403,687.32
  4. Step 4: Simplify right side
    509,408,189.08x = 203,446,648,369,443,552
  5. Step 5: Solve for x
    x = 203,446,648,369,443,552/509,408,189.08
  6. Step 6: Final answer
    x = 399,378,440.97

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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.