Home / 1,399,502,910.83-1,931,302,539.42-764,423,807.66

Finding the Fourth Proportional to 1,399,502,910.83, 1,931,302,539.42 and 764,423,807.66

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Solution

The fourth proportional to 1,399,502,910.83, 1,931,302,539.42 and 764,423,807.66 is: 1,054,898,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,502,910.83 : 1,931,302,539.42 = 764,423,807.66 : x
  2. Step 2: Convert to fraction form
    1,399,502,910.83/1,931,302,539.42 = 764,423,807.66/x
  3. Step 3: Cross multiply
    1,399,502,910.83x = 1,931,302,539.42 × 764,423,807.66
  4. Step 4: Simplify right side
    1,399,502,910.83x = 1,476,333,640,923,761,664
  5. Step 5: Solve for x
    x = 1,476,333,640,923,761,664/1,399,502,910.83
  6. Step 6: Final answer
    x = 1,054,898,585.42

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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.