Home / 497,606,574.78-686,833,654.23-288,829,978.74

Finding the Fourth Proportional to 497,606,574.78, 686,833,654.23 and 288,829,978.74

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Solution

The fourth proportional to 497,606,574.78, 686,833,654.23 and 288,829,978.74 is: 398,664,647.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,606,574.78 : 686,833,654.23 = 288,829,978.74 : x
  2. Step 2: Convert to fraction form
    497,606,574.78/686,833,654.23 = 288,829,978.74/x
  3. Step 3: Cross multiply
    497,606,574.78x = 686,833,654.23 × 288,829,978.74
  4. Step 4: Simplify right side
    497,606,574.78x = 198,378,149,749,167,424
  5. Step 5: Solve for x
    x = 198,378,149,749,167,424/497,606,574.78
  6. Step 6: Final answer
    x = 398,664,647.54

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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.