Home / 1,528,976.80-2,110,011.36-840,678.40

Finding the Fourth Proportional to 1,528,976.80, 2,110,011.36 and 840,678.40

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Solution

The fourth proportional to 1,528,976.80, 2,110,011.36 and 840,678.40 is: 1,160,149.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528,976.80 : 2,110,011.36 = 840,678.40 : x
  2. Step 2: Convert to fraction form
    1,528,976.80/2,110,011.36 = 840,678.40/x
  3. Step 3: Cross multiply
    1,528,976.80x = 2,110,011.36 × 840,678.40
  4. Step 4: Simplify right side
    1,528,976.80x = 1,773,840,974,106.62
  5. Step 5: Solve for x
    x = 1,773,840,974,106.62/1,528,976.80
  6. Step 6: Final answer
    x = 1,160,149.04

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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.