Home / 1,239,042,360.64-1,858,018,149.72-656,640,154.74

Finding the Fourth Proportional to 1,239,042,360.64, 1,858,018,149.72 and 656,640,154.74

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Solution

The fourth proportional to 1,239,042,360.64, 1,858,018,149.72 and 656,640,154.74 is: 984,671,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,042,360.64 : 1,858,018,149.72 = 656,640,154.74 : x
  2. Step 2: Convert to fraction form
    1,239,042,360.64/1,858,018,149.72 = 656,640,154.74/x
  3. Step 3: Cross multiply
    1,239,042,360.64x = 1,858,018,149.72 × 656,640,154.74
  4. Step 4: Simplify right side
    1,239,042,360.64x = 1,220,049,325,341,869,312
  5. Step 5: Solve for x
    x = 1,220,049,325,341,869,312/1,239,042,360.64
  6. Step 6: Final answer
    x = 984,671,197.77

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Double scale
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1.5x scale

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.