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Finding the Fourth Proportional to 784,085,623.20, 1,176,128,434.80 and 784,085,623.20

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Solution

The fourth proportional to 784,085,623.20, 1,176,128,434.80 and 784,085,623.20 is: 1,176,128,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,085,623.20 : 1,176,128,434.80 = 784,085,623.20 : x
  2. Step 2: Convert to fraction form
    784,085,623.20/1,176,128,434.80 = 784,085,623.20/x
  3. Step 3: Cross multiply
    784,085,623.20x = 1,176,128,434.80 × 784,085,623.20
  4. Step 4: Simplify right side
    784,085,623.20x = 922,185,396,763,398,528
  5. Step 5: Solve for x
    x = 922,185,396,763,398,528/784,085,623.20
  6. Step 6: Final answer
    x = 1,176,128,434.80

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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.