Home / 1,238,435.20-1,855,903.20-916,071.40

Finding the Fourth Proportional to 1,238,435.20, 1,855,903.20 and 916,071.40

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Solution

The fourth proportional to 1,238,435.20, 1,855,903.20 and 916,071.40 is: 1,372,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,435.20 : 1,855,903.20 = 916,071.40 : x
  2. Step 2: Convert to fraction form
    1,238,435.20/1,855,903.20 = 916,071.40/x
  3. Step 3: Cross multiply
    1,238,435.20x = 1,855,903.20 × 916,071.40
  4. Step 4: Simplify right side
    1,238,435.20x = 1,700,139,842,688.48
  5. Step 5: Solve for x
    x = 1,700,139,842,688.48/1,238,435.20
  6. Step 6: Final answer
    x = 1,372,812.92

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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.