Home / 28,178,431,639.04-42,267,655,313.76-8,281,317,981.44

Finding the Fourth Proportional to 28,178,431,639.04, 42,267,655,313.76 and 8,281,317,981.44

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Solution

The fourth proportional to 28,178,431,639.04, 42,267,655,313.76 and 8,281,317,981.44 is: 12,421,979,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178,431,639.04 : 42,267,655,313.76 = 8,281,317,981.44 : x
  2. Step 2: Convert to fraction form
    28,178,431,639.04/42,267,655,313.76 = 8,281,317,981.44/x
  3. Step 3: Cross multiply
    28,178,431,639.04x = 42,267,655,313.76 × 8,281,317,981.44
  4. Step 4: Simplify right side
    28,178,431,639.04x = 350,031,893,983,148,638,208
  5. Step 5: Solve for x
    x = 350,031,893,983,148,638,208/28,178,431,639.04
  6. Step 6: Final answer
    x = 12,421,979,280.71

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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.