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Finding the Fourth Proportional to 658,312.80, 987,501.60 and 343,384.80

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Solution

The fourth proportional to 658,312.80, 987,501.60 and 343,384.80 is: 515,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,312.80 : 987,501.60 = 343,384.80 : x
  2. Step 2: Convert to fraction form
    658,312.80/987,501.60 = 343,384.80/x
  3. Step 3: Cross multiply
    658,312.80x = 987,501.60 × 343,384.80
  4. Step 4: Simplify right side
    658,312.80x = 339,093,039,415.68
  5. Step 5: Solve for x
    x = 339,093,039,415.68/658,312.80
  6. Step 6: Final answer
    x = 515,094.10

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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.