Home / 610,890.38-840,039.27-530,177.77

Finding the Fourth Proportional to 610,890.38, 840,039.27 and 530,177.77

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Solution

The fourth proportional to 610,890.38, 840,039.27 and 530,177.77 is: 729,050.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,890.38 : 840,039.27 = 530,177.77 : x
  2. Step 2: Convert to fraction form
    610,890.38/840,039.27 = 530,177.77/x
  3. Step 3: Cross multiply
    610,890.38x = 840,039.27 × 530,177.77
  4. Step 4: Simplify right side
    610,890.38x = 445,370,146,881.03
  5. Step 5: Solve for x
    x = 445,370,146,881.03/610,890.38
  6. Step 6: Final answer
    x = 729,050.85

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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.