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Finding the Fourth Proportional to 638,604,003.60, 957,906,005.40 and 577,382,000.40

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Solution

The fourth proportional to 638,604,003.60, 957,906,005.40 and 577,382,000.40 is: 866,073,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,604,003.60 : 957,906,005.40 = 577,382,000.40 : x
  2. Step 2: Convert to fraction form
    638,604,003.60/957,906,005.40 = 577,382,000.40/x
  3. Step 3: Cross multiply
    638,604,003.60x = 957,906,005.40 × 577,382,000.40
  4. Step 4: Simplify right side
    638,604,003.60x = 553,077,685,593,025,152
  5. Step 5: Solve for x
    x = 553,077,685,593,025,152/638,604,003.60
  6. Step 6: Final answer
    x = 866,073,000.60

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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.