Home / 787,331,386.80-1,180,990,859.40-205,064,506.80

Finding the Fourth Proportional to 787,331,386.80, 1,180,990,859.40 and 205,064,506.80

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Solution

The fourth proportional to 787,331,386.80, 1,180,990,859.40 and 205,064,506.80 is: 307,595,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,331,386.80 : 1,180,990,859.40 = 205,064,506.80 : x
  2. Step 2: Convert to fraction form
    787,331,386.80/1,180,990,859.40 = 205,064,506.80/x
  3. Step 3: Cross multiply
    787,331,386.80x = 1,180,990,859.40 × 205,064,506.80
  4. Step 4: Simplify right side
    787,331,386.80x = 242,179,308,118,169,184
  5. Step 5: Solve for x
    x = 242,179,308,118,169,184/787,331,386.80
  6. Step 6: Final answer
    x = 307,595,139.96

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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.