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Finding the Fourth Proportional to 613,612,808.40, 919,635,391.80 and 249,696,008.40

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Solution

The fourth proportional to 613,612,808.40, 919,635,391.80 and 249,696,008.40 is: 374,225,054.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,612,808.40 : 919,635,391.80 = 249,696,008.40 : x
  2. Step 2: Convert to fraction form
    613,612,808.40/919,635,391.80 = 249,696,008.40/x
  3. Step 3: Cross multiply
    613,612,808.40x = 919,635,391.80 × 249,696,008.40
  4. Step 4: Simplify right side
    613,612,808.40x = 229,629,286,515,830,080
  5. Step 5: Solve for x
    x = 229,629,286,515,830,080/613,612,808.40
  6. Step 6: Final answer
    x = 374,225,054.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.