Home / 717,143,935.96-989,632,503.69-399,587,774.32

Finding the Fourth Proportional to 717,143,935.96, 989,632,503.69 and 399,587,774.32

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Solution

The fourth proportional to 717,143,935.96, 989,632,503.69 and 399,587,774.32 is: 551,416,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,935.96 : 989,632,503.69 = 399,587,774.32 : x
  2. Step 2: Convert to fraction form
    717,143,935.96/989,632,503.69 = 399,587,774.32/x
  3. Step 3: Cross multiply
    717,143,935.96x = 989,632,503.69 × 399,587,774.32
  4. Step 4: Simplify right side
    717,143,935.96x = 395,445,049,539,268,160
  5. Step 5: Solve for x
    x = 395,445,049,539,268,160/717,143,935.96
  6. Step 6: Final answer
    x = 551,416,570.25

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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.