Home / 442,209,999.60-663,314,999.40-312,963,548.40

Finding the Fourth Proportional to 442,209,999.60, 663,314,999.40 and 312,963,548.40

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Solution

The fourth proportional to 442,209,999.60, 663,314,999.40 and 312,963,548.40 is: 469,445,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,209,999.60 : 663,314,999.40 = 312,963,548.40 : x
  2. Step 2: Convert to fraction form
    442,209,999.60/663,314,999.40 = 312,963,548.40/x
  3. Step 3: Cross multiply
    442,209,999.60x = 663,314,999.40 × 312,963,548.40
  4. Step 4: Simplify right side
    442,209,999.60x = 207,593,415,919,167,840
  5. Step 5: Solve for x
    x = 207,593,415,919,167,840/442,209,999.60
  6. Step 6: Final answer
    x = 469,445,322.60

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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.