Home / 817,243,716.16-1,127,820,145.68-445,989,660.64

Finding the Fourth Proportional to 817,243,716.16, 1,127,820,145.68 and 445,989,660.64

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Solution

The fourth proportional to 817,243,716.16, 1,127,820,145.68 and 445,989,660.64 is: 615,478,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,243,716.16 : 1,127,820,145.68 = 445,989,660.64 : x
  2. Step 2: Convert to fraction form
    817,243,716.16/1,127,820,145.68 = 445,989,660.64/x
  3. Step 3: Cross multiply
    817,243,716.16x = 1,127,820,145.68 × 445,989,660.64
  4. Step 4: Simplify right side
    817,243,716.16x = 502,996,124,034,778,560
  5. Step 5: Solve for x
    x = 502,996,124,034,778,560/817,243,716.16
  6. Step 6: Final answer
    x = 615,478,729.40

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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.