Home / 648,619,121.40-974,480,818.14-415,905,771.50

Finding the Fourth Proportional to 648,619,121.40, 974,480,818.14 and 415,905,771.50

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Solution

The fourth proportional to 648,619,121.40, 974,480,818.14 and 415,905,771.50 is: 624,853,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,619,121.40 : 974,480,818.14 = 415,905,771.50 : x
  2. Step 2: Convert to fraction form
    648,619,121.40/974,480,818.14 = 415,905,771.50/x
  3. Step 3: Cross multiply
    648,619,121.40x = 974,480,818.14 × 415,905,771.50
  4. Step 4: Simplify right side
    648,619,121.40x = 405,292,196,478,388,352
  5. Step 5: Solve for x
    x = 405,292,196,478,388,352/648,619,121.40
  6. Step 6: Final answer
    x = 624,853,913.66

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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.