Home / 708,499.60-977,176.42-490,790.43

Finding the Fourth Proportional to 708,499.60, 977,176.42 and 490,790.43

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Solution

The fourth proportional to 708,499.60, 977,176.42 and 490,790.43 is: 676,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,499.60 : 977,176.42 = 490,790.43 : x
  2. Step 2: Convert to fraction form
    708,499.60/977,176.42 = 490,790.43/x
  3. Step 3: Cross multiply
    708,499.60x = 977,176.42 × 490,790.43
  4. Step 4: Simplify right side
    708,499.60x = 479,588,834,130.69
  5. Step 5: Solve for x
    x = 479,588,834,130.69/708,499.60
  6. Step 6: Final answer
    x = 676,907.70

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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.