Home / 516,330,985.23-712,518,661.62-281,376,851.31

Finding the Fourth Proportional to 516,330,985.23, 712,518,661.62 and 281,376,851.31

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Solution

The fourth proportional to 516,330,985.23, 712,518,661.62 and 281,376,851.31 is: 388,290,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,330,985.23 : 712,518,661.62 = 281,376,851.31 : x
  2. Step 2: Convert to fraction form
    516,330,985.23/712,518,661.62 = 281,376,851.31/x
  3. Step 3: Cross multiply
    516,330,985.23x = 712,518,661.62 × 281,376,851.31
  4. Step 4: Simplify right side
    516,330,985.23x = 200,486,257,506,250,944
  5. Step 5: Solve for x
    x = 200,486,257,506,250,944/516,330,985.23
  6. Step 6: Final answer
    x = 388,290,192.22

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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.