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Finding the Fourth Proportional to 506,799.60, 699,374.52 and 291,939

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Solution

The fourth proportional to 506,799.60, 699,374.52 and 291,939 is: 402,870.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,799.60 : 699,374.52 = 291,939 : x
  2. Step 2: Convert to fraction form
    506,799.60/699,374.52 = 291,939/x
  3. Step 3: Cross multiply
    506,799.60x = 699,374.52 × 291,939
  4. Step 4: Simplify right side
    506,799.60x = 204,174,697,994.28
  5. Step 5: Solve for x
    x = 204,174,697,994.28/506,799.60
  6. Step 6: Final answer
    x = 402,870.68

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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.