Home / 697,789.65-962,946.07-391,878.92

Finding the Fourth Proportional to 697,789.65, 962,946.07 and 391,878.92

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Solution

The fourth proportional to 697,789.65, 962,946.07 and 391,878.92 is: 540,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,789.65 : 962,946.07 = 391,878.92 : x
  2. Step 2: Convert to fraction form
    697,789.65/962,946.07 = 391,878.92/x
  3. Step 3: Cross multiply
    697,789.65x = 962,946.07 × 391,878.92
  4. Step 4: Simplify right side
    697,789.65x = 377,358,267,357.51
  5. Step 5: Solve for x
    x = 377,358,267,357.51/697,789.65
  6. Step 6: Final answer
    x = 540,790.87

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Double scale
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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.