Home / 811,103,677.60-1,216,655,516.40-538,474,444.60

Finding the Fourth Proportional to 811,103,677.60, 1,216,655,516.40 and 538,474,444.60

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Solution

The fourth proportional to 811,103,677.60, 1,216,655,516.40 and 538,474,444.60 is: 807,711,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,103,677.60 : 1,216,655,516.40 = 538,474,444.60 : x
  2. Step 2: Convert to fraction form
    811,103,677.60/1,216,655,516.40 = 538,474,444.60/x
  3. Step 3: Cross multiply
    811,103,677.60x = 1,216,655,516.40 × 538,474,444.60
  4. Step 4: Simplify right side
    811,103,677.60x = 655,137,903,463,016,320
  5. Step 5: Solve for x
    x = 655,137,903,463,016,320/811,103,677.60
  6. Step 6: Final answer
    x = 807,711,666.90

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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.