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Finding the Fourth Proportional to 659,853.80, 989,813.10 and 344,925.80

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Solution

The fourth proportional to 659,853.80, 989,813.10 and 344,925.80 is: 517,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,853.80 : 989,813.10 = 344,925.80 : x
  2. Step 2: Convert to fraction form
    659,853.80/989,813.10 = 344,925.80/x
  3. Step 3: Cross multiply
    659,853.80x = 989,813.10 × 344,925.80
  4. Step 4: Simplify right side
    659,853.80x = 341,412,075,367.98
  5. Step 5: Solve for x
    x = 341,412,075,367.98/659,853.80
  6. Step 6: Final answer
    x = 517,405.64

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1.5x scale

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.