Home / 1,918,138.96-2,877,140.34-478,830.52

Finding the Fourth Proportional to 1,918,138.96, 2,877,140.34 and 478,830.52

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Solution

The fourth proportional to 1,918,138.96, 2,877,140.34 and 478,830.52 is: 718,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,138.96 : 2,877,140.34 = 478,830.52 : x
  2. Step 2: Convert to fraction form
    1,918,138.96/2,877,140.34 = 478,830.52/x
  3. Step 3: Cross multiply
    1,918,138.96x = 2,877,140.34 × 478,830.52
  4. Step 4: Simplify right side
    1,918,138.96x = 1,377,662,605,115.18
  5. Step 5: Solve for x
    x = 1,377,662,605,115.18/1,918,138.96
  6. Step 6: Final answer
    x = 718,228.78

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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.