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Finding the Fourth Proportional to 649,487.40, 971,606.70 and 561,715.80

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Solution

The fourth proportional to 649,487.40, 971,606.70 and 561,715.80 is: 840,303.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,487.40 : 971,606.70 = 561,715.80 : x
  2. Step 2: Convert to fraction form
    649,487.40/971,606.70 = 561,715.80/x
  3. Step 3: Cross multiply
    649,487.40x = 971,606.70 × 561,715.80
  4. Step 4: Simplify right side
    649,487.40x = 545,766,834,775.86
  5. Step 5: Solve for x
    x = 545,766,834,775.86/649,487.40
  6. Step 6: Final answer
    x = 840,303.96

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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.