Home / 497,612,509.16-686,841,863.31-288,835,912.31

Finding the Fourth Proportional to 497,612,509.16, 686,841,863.31 and 288,835,912.31

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Solution

The fourth proportional to 497,612,509.16, 686,841,863.31 and 288,835,912.31 is: 398,672,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,612,509.16 : 686,841,863.31 = 288,835,912.31 : x
  2. Step 2: Convert to fraction form
    497,612,509.16/686,841,863.31 = 288,835,912.31/x
  3. Step 3: Cross multiply
    497,612,509.16x = 686,841,863.31 × 288,835,912.31
  4. Step 4: Simplify right side
    497,612,509.16x = 198,384,596,198,409,952
  5. Step 5: Solve for x
    x = 198,384,596,198,409,952/497,612,509.16
  6. Step 6: Final answer
    x = 398,672,847.95

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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.