Home / 747,954,145.60-1,121,931,218.40-472,455,131.20

Finding the Fourth Proportional to 747,954,145.60, 1,121,931,218.40 and 472,455,131.20

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Solution

The fourth proportional to 747,954,145.60, 1,121,931,218.40 and 472,455,131.20 is: 708,682,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,954,145.60 : 1,121,931,218.40 = 472,455,131.20 : x
  2. Step 2: Convert to fraction form
    747,954,145.60/1,121,931,218.40 = 472,455,131.20/x
  3. Step 3: Cross multiply
    747,954,145.60x = 1,121,931,218.40 × 472,455,131.20
  4. Step 4: Simplify right side
    747,954,145.60x = 530,062,160,986,547,904
  5. Step 5: Solve for x
    x = 530,062,160,986,547,904/747,954,145.60
  6. Step 6: Final answer
    x = 708,682,696.80

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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.