Home / 280,516,811.10-420,775,216.65-280,516,811.10

Finding the Fourth Proportional to 280,516,811.10, 420,775,216.65 and 280,516,811.10

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Solution

The fourth proportional to 280,516,811.10, 420,775,216.65 and 280,516,811.10 is: 420,775,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,516,811.10 : 420,775,216.65 = 280,516,811.10 : x
  2. Step 2: Convert to fraction form
    280,516,811.10/420,775,216.65 = 280,516,811.10/x
  3. Step 3: Cross multiply
    280,516,811.10x = 420,775,216.65 × 280,516,811.10
  4. Step 4: Simplify right side
    280,516,811.10x = 118,034,521,964,569,632
  5. Step 5: Solve for x
    x = 118,034,521,964,569,632/280,516,811.10
  6. Step 6: Final answer
    x = 420,775,216.65

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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.