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Finding the Fourth Proportional to 517,862,648.80, 776,793,973.20 and 493,974,776.80

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Solution

The fourth proportional to 517,862,648.80, 776,793,973.20 and 493,974,776.80 is: 740,962,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,862,648.80 : 776,793,973.20 = 493,974,776.80 : x
  2. Step 2: Convert to fraction form
    517,862,648.80/776,793,973.20 = 493,974,776.80/x
  3. Step 3: Cross multiply
    517,862,648.80x = 776,793,973.20 × 493,974,776.80
  4. Step 4: Simplify right side
    517,862,648.80x = 383,716,629,531,055,232
  5. Step 5: Solve for x
    x = 383,716,629,531,055,232/517,862,648.80
  6. Step 6: Final answer
    x = 740,962,165.20

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Double scale
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Similar ratio
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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.