Home / 1,578,141.20-2,365,656.60-778,768.40

Finding the Fourth Proportional to 1,578,141.20, 2,365,656.60 and 778,768.40

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Solution

The fourth proportional to 1,578,141.20, 2,365,656.60 and 778,768.40 is: 1,167,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,141.20 : 2,365,656.60 = 778,768.40 : x
  2. Step 2: Convert to fraction form
    1,578,141.20/2,365,656.60 = 778,768.40/x
  3. Step 3: Cross multiply
    1,578,141.20x = 2,365,656.60 × 778,768.40
  4. Step 4: Simplify right side
    1,578,141.20x = 1,842,298,605,331.44
  5. Step 5: Solve for x
    x = 1,842,298,605,331.44/1,578,141.20
  6. Step 6: Final answer
    x = 1,167,385.15

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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.