Home / 1,287,594,287.40-1,776,923,035.92-723,178,631.70

Finding the Fourth Proportional to 1,287,594,287.40, 1,776,923,035.92 and 723,178,631.70

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Solution

The fourth proportional to 1,287,594,287.40, 1,776,923,035.92 and 723,178,631.70 is: 998,010,617.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,594,287.40 : 1,776,923,035.92 = 723,178,631.70 : x
  2. Step 2: Convert to fraction form
    1,287,594,287.40/1,776,923,035.92 = 723,178,631.70/x
  3. Step 3: Cross multiply
    1,287,594,287.40x = 1,776,923,035.92 × 723,178,631.70
  4. Step 4: Simplify right side
    1,287,594,287.40x = 1,285,032,769,752,835,584
  5. Step 5: Solve for x
    x = 1,285,032,769,752,835,584/1,287,594,287.40
  6. Step 6: Final answer
    x = 998,010,617.42

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1.5x scale

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.