Home / 931,040,393.12-1,284,893,091.70-513,351,386.72

Finding the Fourth Proportional to 931,040,393.12, 1,284,893,091.70 and 513,351,386.72

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Solution

The fourth proportional to 931,040,393.12, 1,284,893,091.70 and 513,351,386.72 is: 708,456,534.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,040,393.12 : 1,284,893,091.70 = 513,351,386.72 : x
  2. Step 2: Convert to fraction form
    931,040,393.12/1,284,893,091.70 = 513,351,386.72/x
  3. Step 3: Cross multiply
    931,040,393.12x = 1,284,893,091.70 × 513,351,386.72
  4. Step 4: Simplify right side
    931,040,393.12x = 659,601,650,403,435,264
  5. Step 5: Solve for x
    x = 659,601,650,403,435,264/931,040,393.12
  6. Step 6: Final answer
    x = 708,456,534.52

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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.