Home / 938,017,670.40-1,407,026,505.60-693,129,657.60

Finding the Fourth Proportional to 938,017,670.40, 1,407,026,505.60 and 693,129,657.60

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Solution

The fourth proportional to 938,017,670.40, 1,407,026,505.60 and 693,129,657.60 is: 1,039,694,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,017,670.40 : 1,407,026,505.60 = 693,129,657.60 : x
  2. Step 2: Convert to fraction form
    938,017,670.40/1,407,026,505.60 = 693,129,657.60/x
  3. Step 3: Cross multiply
    938,017,670.40x = 1,407,026,505.60 × 693,129,657.60
  4. Step 4: Simplify right side
    938,017,670.40x = 975,251,800,060,652,416
  5. Step 5: Solve for x
    x = 975,251,800,060,652,416/938,017,670.40
  6. Step 6: Final answer
    x = 1,039,694,486.40

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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.