Home / 810,312,943.95-1,117,800,516.45-492,870,280.86

Finding the Fourth Proportional to 810,312,943.95, 1,117,800,516.45 and 492,870,280.86

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Solution

The fourth proportional to 810,312,943.95, 1,117,800,516.45 and 492,870,280.86 is: 679,898,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,312,943.95 : 1,117,800,516.45 = 492,870,280.86 : x
  2. Step 2: Convert to fraction form
    810,312,943.95/1,117,800,516.45 = 492,870,280.86/x
  3. Step 3: Cross multiply
    810,312,943.95x = 1,117,800,516.45 × 492,870,280.86
  4. Step 4: Simplify right side
    810,312,943.95x = 550,930,654,488,164,608
  5. Step 5: Solve for x
    x = 550,930,654,488,164,608/810,312,943.95
  6. Step 6: Final answer
    x = 679,898,622.63

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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.