Home / 986,145,109.45-1,478,868,753.80-286,491,684.51

Finding the Fourth Proportional to 986,145,109.45, 1,478,868,753.80 and 286,491,684.51

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Solution

The fourth proportional to 986,145,109.45, 1,478,868,753.80 and 286,491,684.51 is: 429,636,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,145,109.45 : 1,478,868,753.80 = 286,491,684.51 : x
  2. Step 2: Convert to fraction form
    986,145,109.45/1,478,868,753.80 = 286,491,684.51/x
  3. Step 3: Cross multiply
    986,145,109.45x = 1,478,868,753.80 × 286,491,684.51
  4. Step 4: Simplify right side
    986,145,109.45x = 423,683,600,446,082,688
  5. Step 5: Solve for x
    x = 423,683,600,446,082,688/986,145,109.45
  6. Step 6: Final answer
    x = 429,636,162.45

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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.