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Finding the Fourth Proportional to 860,794,854.05, 1,188,263,434.90 and 578,700,899.03

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Solution

The fourth proportional to 860,794,854.05, 1,188,263,434.90 and 578,700,899.03 is: 798,853,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,794,854.05 : 1,188,263,434.90 = 578,700,899.03 : x
  2. Step 2: Convert to fraction form
    860,794,854.05/1,188,263,434.90 = 578,700,899.03/x
  3. Step 3: Cross multiply
    860,794,854.05x = 1,188,263,434.90 × 578,700,899.03
  4. Step 4: Simplify right side
    860,794,854.05x = 687,649,118,061,105,920
  5. Step 5: Solve for x
    x = 687,649,118,061,105,920/860,794,854.05
  6. Step 6: Final answer
    x = 798,853,658.13

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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.