Home / 1,238,454.96-1,708,341.96-778,840.50

Finding the Fourth Proportional to 1,238,454.96, 1,708,341.96 and 778,840.50

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Solution

The fourth proportional to 1,238,454.96, 1,708,341.96 and 778,840.50 is: 1,074,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,454.96 : 1,708,341.96 = 778,840.50 : x
  2. Step 2: Convert to fraction form
    1,238,454.96/1,708,341.96 = 778,840.50/x
  3. Step 3: Cross multiply
    1,238,454.96x = 1,708,341.96 × 778,840.50
  4. Step 4: Simplify right side
    1,238,454.96x = 1,330,525,906,297.38
  5. Step 5: Solve for x
    x = 1,330,525,906,297.38/1,238,454.96
  6. Step 6: Final answer
    x = 1,074,343.40

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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.