Home / 1,238,455.96-1,708,343.34-778,841.50

Finding the Fourth Proportional to 1,238,455.96, 1,708,343.34 and 778,841.50

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Solution

The fourth proportional to 1,238,455.96, 1,708,343.34 and 778,841.50 is: 1,074,344.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,455.96 : 1,708,343.34 = 778,841.50 : x
  2. Step 2: Convert to fraction form
    1,238,455.96/1,708,343.34 = 778,841.50/x
  3. Step 3: Cross multiply
    1,238,455.96x = 1,708,343.34 × 778,841.50
  4. Step 4: Simplify right side
    1,238,455.96x = 1,330,528,689,440.61
  5. Step 5: Solve for x
    x = 1,330,528,689,440.61/1,238,455.96
  6. Step 6: Final answer
    x = 1,074,344.77

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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.