Home / 518,856,989,515.64-778,402,840,443.08-280,086,513,608.08

Finding the Fourth Proportional to 518,856,989,515.64, 778,402,840,443.08 and 280,086,513,608.08

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Solution

The fourth proportional to 518,856,989,515.64, 778,402,840,443.08 and 280,086,513,608.08 is: 420,193,120,971.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,856,989,515.64 : 778,402,840,443.08 = 280,086,513,608.08 : x
  2. Step 2: Convert to fraction form
    518,856,989,515.64/778,402,840,443.08 = 280,086,513,608.08/x
  3. Step 3: Cross multiply
    518,856,989,515.64x = 778,402,840,443.08 × 280,086,513,608.08
  4. Step 4: Simplify right side
    518,856,989,515.64x = 218,020,137,762,328,839,979,008
  5. Step 5: Solve for x
    x = 218,020,137,762,328,839,979,008/518,856,989,515.64
  6. Step 6: Final answer
    x = 420,193,120,971.26

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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.