Home / 391,140,580,442.80-586,710,870,664.20-139,609,980,295.60

Finding the Fourth Proportional to 391,140,580,442.80, 586,710,870,664.20 and 139,609,980,295.60

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Solution

The fourth proportional to 391,140,580,442.80, 586,710,870,664.20 and 139,609,980,295.60 is: 209,414,970,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,140,580,442.80 : 586,710,870,664.20 = 139,609,980,295.60 : x
  2. Step 2: Convert to fraction form
    391,140,580,442.80/586,710,870,664.20 = 139,609,980,295.60/x
  3. Step 3: Cross multiply
    391,140,580,442.80x = 586,710,870,664.20 × 139,609,980,295.60
  4. Step 4: Simplify right side
    391,140,580,442.80x = 81,910,693,092,643,276,062,720
  5. Step 5: Solve for x
    x = 81,910,693,092,643,276,062,720/391,140,580,442.80
  6. Step 6: Final answer
    x = 209,414,970,443.40

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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.