Home / 717,143,573.23-989,632,003.79-399,587,411.93

Finding the Fourth Proportional to 717,143,573.23, 989,632,003.79 and 399,587,411.93

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Solution

The fourth proportional to 717,143,573.23, 989,632,003.79 and 399,587,411.93 is: 551,416,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,573.23 : 989,632,003.79 = 399,587,411.93 : x
  2. Step 2: Convert to fraction form
    717,143,573.23/989,632,003.79 = 399,587,411.93/x
  3. Step 3: Cross multiply
    717,143,573.23x = 989,632,003.79 × 399,587,411.93
  4. Step 4: Simplify right side
    717,143,573.23x = 395,444,491,153,596,864
  5. Step 5: Solve for x
    x = 395,444,491,153,596,864/717,143,573.23
  6. Step 6: Final answer
    x = 551,416,070.53

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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.