Home / 817,778,708.81-1,227,024,862.12-286,371,540.45

Finding the Fourth Proportional to 817,778,708.81, 1,227,024,862.12 and 286,371,540.45

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Solution

The fourth proportional to 817,778,708.81, 1,227,024,862.12 and 286,371,540.45 is: 429,682,255.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,778,708.81 : 1,227,024,862.12 = 286,371,540.45 : x
  2. Step 2: Convert to fraction form
    817,778,708.81/1,227,024,862.12 = 286,371,540.45/x
  3. Step 3: Cross multiply
    817,778,708.81x = 1,227,024,862.12 × 286,371,540.45
  4. Step 4: Simplify right side
    817,778,708.81x = 351,384,999,935,753,216
  5. Step 5: Solve for x
    x = 351,384,999,935,753,216/817,778,708.81
  6. Step 6: Final answer
    x = 429,682,255.30

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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.