Home / 772,061,066.40-1,065,439,276.20-442,099,978.32

Finding the Fourth Proportional to 772,061,066.40, 1,065,439,276.20 and 442,099,978.32

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Solution

The fourth proportional to 772,061,066.40, 1,065,439,276.20 and 442,099,978.32 is: 610,095,109.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,061,066.40 : 1,065,439,276.20 = 442,099,978.32 : x
  2. Step 2: Convert to fraction form
    772,061,066.40/1,065,439,276.20 = 442,099,978.32/x
  3. Step 3: Cross multiply
    772,061,066.40x = 1,065,439,276.20 × 442,099,978.32
  4. Step 4: Simplify right side
    772,061,066.40x = 471,030,680,909,296,512
  5. Step 5: Solve for x
    x = 471,030,680,909,296,512/772,061,066.40
  6. Step 6: Final answer
    x = 610,095,109.58

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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.