Home / 917,686,212.88-1,376,528,069.76-426,130,690.72

Finding the Fourth Proportional to 917,686,212.88, 1,376,528,069.76 and 426,130,690.72

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Solution

The fourth proportional to 917,686,212.88, 1,376,528,069.76 and 426,130,690.72 is: 639,195,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,686,212.88 : 1,376,528,069.76 = 426,130,690.72 : x
  2. Step 2: Convert to fraction form
    917,686,212.88/1,376,528,069.76 = 426,130,690.72/x
  3. Step 3: Cross multiply
    917,686,212.88x = 1,376,528,069.76 × 426,130,690.72
  4. Step 4: Simplify right side
    917,686,212.88x = 586,580,857,162,297,216
  5. Step 5: Solve for x
    x = 586,580,857,162,297,216/917,686,212.88
  6. Step 6: Final answer
    x = 639,195,455.84

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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.