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Finding the Fourth Proportional to 710,147.66, 979,988.58 and 387,859.01

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Solution

The fourth proportional to 710,147.66, 979,988.58 and 387,859.01 is: 535,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,147.66 : 979,988.58 = 387,859.01 : x
  2. Step 2: Convert to fraction form
    710,147.66/979,988.58 = 387,859.01/x
  3. Step 3: Cross multiply
    710,147.66x = 979,988.58 × 387,859.01
  4. Step 4: Simplify right side
    710,147.66x = 380,097,395,550.16
  5. Step 5: Solve for x
    x = 380,097,395,550.16/710,147.66
  6. Step 6: Final answer
    x = 535,237.13

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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.