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Finding the Fourth Proportional to 649,918.80, 974,489.40 and 334,990.80

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Solution

The fourth proportional to 649,918.80, 974,489.40 and 334,990.80 is: 502,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,918.80 : 974,489.40 = 334,990.80 : x
  2. Step 2: Convert to fraction form
    649,918.80/974,489.40 = 334,990.80/x
  3. Step 3: Cross multiply
    649,918.80x = 974,489.40 × 334,990.80
  4. Step 4: Simplify right side
    649,918.80x = 326,444,983,697.52
  5. Step 5: Solve for x
    x = 326,444,983,697.52/649,918.80
  6. Step 6: Final answer
    x = 502,285.80

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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.