Home / 1,220,697-1,684,582.11-676,855.71

Finding the Fourth Proportional to 1,220,697, 1,684,582.11 and 676,855.71

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Solution

The fourth proportional to 1,220,697, 1,684,582.11 and 676,855.71 is: 934,072.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,697 : 1,684,582.11 = 676,855.71 : x
  2. Step 2: Convert to fraction form
    1,220,697/1,684,582.11 = 676,855.71/x
  3. Step 3: Cross multiply
    1,220,697x = 1,684,582.11 × 676,855.71
  4. Step 4: Simplify right side
    1,220,697x = 1,140,219,020,117.35
  5. Step 5: Solve for x
    x = 1,140,219,020,117.35/1,220,697
  6. Step 6: Final answer
    x = 934,072.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.