Home / 705,013,405.08-972,899,150.13-391,739,564.40

Finding the Fourth Proportional to 705,013,405.08, 972,899,150.13 and 391,739,564.40

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Solution

The fourth proportional to 705,013,405.08, 972,899,150.13 and 391,739,564.40 is: 540,589,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,013,405.08 : 972,899,150.13 = 391,739,564.40 : x
  2. Step 2: Convert to fraction form
    705,013,405.08/972,899,150.13 = 391,739,564.40/x
  3. Step 3: Cross multiply
    705,013,405.08x = 972,899,150.13 × 391,739,564.40
  4. Step 4: Simplify right side
    705,013,405.08x = 381,123,089,277,056,384
  5. Step 5: Solve for x
    x = 381,123,089,277,056,384/705,013,405.08
  6. Step 6: Final answer
    x = 540,589,847.70

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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.