Home / 1,312,204.80-1,969,228.80-840,038.40

Finding the Fourth Proportional to 1,312,204.80, 1,969,228.80 and 840,038.40

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Solution

The fourth proportional to 1,312,204.80, 1,969,228.80 and 840,038.40 is: 1,260,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,204.80 : 1,969,228.80 = 840,038.40 : x
  2. Step 2: Convert to fraction form
    1,312,204.80/1,969,228.80 = 840,038.40/x
  3. Step 3: Cross multiply
    1,312,204.80x = 1,969,228.80 × 840,038.40
  4. Step 4: Simplify right side
    1,312,204.80x = 1,654,227,810,385.92
  5. Step 5: Solve for x
    x = 1,654,227,810,385.92/1,312,204.80
  6. Step 6: Final answer
    x = 1,260,647.58

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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.