Home / 649,814.40-974,575.80-426,740.40

Finding the Fourth Proportional to 649,814.40, 974,575.80 and 426,740.40

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Solution

The fourth proportional to 649,814.40, 974,575.80 and 426,740.40 is: 640,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,814.40 : 974,575.80 = 426,740.40 : x
  2. Step 2: Convert to fraction form
    649,814.40/974,575.80 = 426,740.40/x
  3. Step 3: Cross multiply
    649,814.40x = 974,575.80 × 426,740.40
  4. Step 4: Simplify right side
    649,814.40x = 415,890,866,722.32
  5. Step 5: Solve for x
    x = 415,890,866,722.32/649,814.40
  6. Step 6: Final answer
    x = 640,014.85

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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.