Home / 661,015,399,864.68-991,519,771,598.80-258,139,780,784.28

Finding the Fourth Proportional to 661,015,399,864.68, 991,519,771,598.80 and 258,139,780,784.28

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Solution

The fourth proportional to 661,015,399,864.68, 991,519,771,598.80 and 258,139,780,784.28 is: 387,208,371,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,015,399,864.68 : 991,519,771,598.80 = 258,139,780,784.28 : x
  2. Step 2: Convert to fraction form
    661,015,399,864.68/991,519,771,598.80 = 258,139,780,784.28/x
  3. Step 3: Cross multiply
    661,015,399,864.68x = 991,519,771,598.80 × 258,139,780,784.28
  4. Step 4: Simplify right side
    661,015,399,864.68x = 255,950,696,483,793,603,133,440
  5. Step 5: Solve for x
    x = 255,950,696,483,793,603,133,440/661,015,399,864.68
  6. Step 6: Final answer
    x = 387,208,371,448.22

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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.