Home / 915,941,068.71-1,263,997,718.21-498,252,357.55

Finding the Fourth Proportional to 915,941,068.71, 1,263,997,718.21 and 498,252,357.55

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Solution

The fourth proportional to 915,941,068.71, 1,263,997,718.21 and 498,252,357.55 is: 687,587,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,941,068.71 : 1,263,997,718.21 = 498,252,357.55 : x
  2. Step 2: Convert to fraction form
    915,941,068.71/1,263,997,718.21 = 498,252,357.55/x
  3. Step 3: Cross multiply
    915,941,068.71x = 1,263,997,718.21 × 498,252,357.55
  4. Step 4: Simplify right side
    915,941,068.71x = 629,789,843,035,953,152
  5. Step 5: Solve for x
    x = 629,789,843,035,953,152/915,941,068.71
  6. Step 6: Final answer
    x = 687,587,733.04

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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.