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Finding the Fourth Proportional to 661,570,563.80, 992,355,845.70 and 558,258,433.40

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Solution

The fourth proportional to 661,570,563.80, 992,355,845.70 and 558,258,433.40 is: 837,387,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,570,563.80 : 992,355,845.70 = 558,258,433.40 : x
  2. Step 2: Convert to fraction form
    661,570,563.80/992,355,845.70 = 558,258,433.40/x
  3. Step 3: Cross multiply
    661,570,563.80x = 992,355,845.70 × 558,258,433.40
  4. Step 4: Simplify right side
    661,570,563.80x = 553,991,019,795,814,144
  5. Step 5: Solve for x
    x = 553,991,019,795,814,144/661,570,563.80
  6. Step 6: Final answer
    x = 837,387,650.10

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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.