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Finding the Fourth Proportional to 709,890.02, 979,505.60 and 451,870.82

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Solution

The fourth proportional to 709,890.02, 979,505.60 and 451,870.82 is: 623,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,890.02 : 979,505.60 = 451,870.82 : x
  2. Step 2: Convert to fraction form
    709,890.02/979,505.60 = 451,870.82/x
  3. Step 3: Cross multiply
    709,890.02x = 979,505.60 × 451,870.82
  4. Step 4: Simplify right side
    709,890.02x = 442,609,998,666.59
  5. Step 5: Solve for x
    x = 442,609,998,666.59/709,890.02
  6. Step 6: Final answer
    x = 623,490.94

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1.5x scale

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.