Home / 931,942,643.52-1,286,108,180.40-508,583,639.84

Finding the Fourth Proportional to 931,942,643.52, 1,286,108,180.40 and 508,583,639.84

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Solution

The fourth proportional to 931,942,643.52, 1,286,108,180.40 and 508,583,639.84 is: 701,860,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,942,643.52 : 1,286,108,180.40 = 508,583,639.84 : x
  2. Step 2: Convert to fraction form
    931,942,643.52/1,286,108,180.40 = 508,583,639.84/x
  3. Step 3: Cross multiply
    931,942,643.52x = 1,286,108,180.40 × 508,583,639.84
  4. Step 4: Simplify right side
    931,942,643.52x = 654,093,579,615,831,424
  5. Step 5: Solve for x
    x = 654,093,579,615,831,424/931,942,643.52
  6. Step 6: Final answer
    x = 701,860,338.90

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Double scale
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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.