Home / 520,989,967.60-718,967,570-286,055,845.04

Finding the Fourth Proportional to 520,989,967.60, 718,967,570 and 286,055,845.04

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Solution

The fourth proportional to 520,989,967.60, 718,967,570 and 286,055,845.04 is: 394,757,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,989,967.60 : 718,967,570 = 286,055,845.04 : x
  2. Step 2: Convert to fraction form
    520,989,967.60/718,967,570 = 286,055,845.04/x
  3. Step 3: Cross multiply
    520,989,967.60x = 718,967,570 × 286,055,845.04
  4. Step 4: Simplify right side
    520,989,967.60x = 205,664,875,792,705,376
  5. Step 5: Solve for x
    x = 205,664,875,792,705,376/520,989,967.60
  6. Step 6: Final answer
    x = 394,757,842.92

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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.