Home / 286,011,007.80-429,016,511.70-78,749,017.80

Finding the Fourth Proportional to 286,011,007.80, 429,016,511.70 and 78,749,017.80

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Solution

The fourth proportional to 286,011,007.80, 429,016,511.70 and 78,749,017.80 is: 118,123,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,011,007.80 : 429,016,511.70 = 78,749,017.80 : x
  2. Step 2: Convert to fraction form
    286,011,007.80/429,016,511.70 = 78,749,017.80/x
  3. Step 3: Cross multiply
    286,011,007.80x = 429,016,511.70 × 78,749,017.80
  4. Step 4: Simplify right side
    286,011,007.80x = 33,784,628,916,357,208
  5. Step 5: Solve for x
    x = 33,784,628,916,357,208/286,011,007.80
  6. Step 6: Final answer
    x = 118,123,526.70

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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.